{"gene":"ANKRD17","run_date":"2026-04-28T17:12:37","timeline":{"discoveries":[{"year":2009,"finding":"ANKRD17 (Ankrd17) was identified as a novel substrate of Cyclin E/Cdk2. It associates with Cyclin E/Cdk2 via an RXL motif at its C-terminus and is phosphorylated at Ser1791, Ser1794, and Ser2150. ANKRD17 interacts with DNA replication factors MCM family members, Cdc6, and PCNA in the nucleus, and its depletion reduces Cdc6 and PCNA loading onto DNA, blocking S-phase entry and upregulating p53 and p21.","method":"TAP-tag purification, Co-immunoprecipitation, siRNA knockdown, in vitro kinase assay, cell cycle analysis","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods (TAP purification, Co-IP, kinase assay, siRNA, functional rescue) in a single study","pmids":["19150984"],"is_preprint":false},{"year":2009,"finding":"Homozygous knockout of Ankrd17 in mice causes embryonic lethality between E10.5 and E11.5 due to cardiovascular defects, including hemorrhage and drastically reduced vascular smooth muscle cells (vSMCs) surrounding vessels, indicating Ankrd17 is essential for vascular maturation. Notably, vSMC differentiation marker genes were paradoxically upregulated in mutant embryos.","method":"Gene targeting/knockout mouse, histology, marker gene expression analysis","journal":"FEBS letters","confidence":"High","confidence_rationale":"Tier 2 — clean in vivo genetic knockout with defined phenotypic readout","pmids":["19619540"],"is_preprint":false},{"year":2012,"finding":"Ankrd17 positively regulates RIG-I-like receptor (RLR)-mediated innate immune signaling. It physically interacts with RIG-I, MDA5, and VISA (MAVS), and its ankyrin repeat domain is required for these interactions. Overexpression of Ankrd17 enhances RIG-I/MDA5-VISA interaction and promotes IRF-3 and NF-κB activation and IFN-β transcription, while knockdown impairs RLR signaling.","method":"Co-immunoprecipitation, overexpression, siRNA knockdown, reporter assays (IRF-3, NF-κB, IFN-β luciferase), domain mapping","journal":"European journal of immunology","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP, domain mapping, and orthogonal functional assays with both gain- and loss-of-function","pmids":["22328336"],"is_preprint":false},{"year":2013,"finding":"Ankrd17 is a novel binding partner of NOD2 (and functionally involved in NOD1 signaling), with its N-terminal domain mediating NOD2 binding. Knockdown and overexpression showed Ankrd17 is required for NOD1/NOD2-mediated pro-inflammatory responses in human myeloid and epithelial cells and contributes to responses induced by Shigella flexneri infection, but not to type I interferon responses triggered by Sendai virus.","method":"Co-immunoprecipitation, domain mapping, siRNA knockdown, overexpression, bacterial infection assays, reporter assays","journal":"FEBS letters","confidence":"Medium","confidence_rationale":"Tier 2-3 — Co-IP with domain mapping and functional knockdown/overexpression, single lab","pmids":["23711367"],"is_preprint":false},{"year":2011,"finding":"Murine cytomegalovirus (MCMV) IE3 protein interacts with Ankrd17, with the N-terminal 1–148 residues of IE3 responsible for the interaction, as identified by yeast two-hybrid screening and confirmed by co-immunoprecipitation.","method":"Yeast two-hybrid, co-immunoprecipitation, domain mapping","journal":"Journal of Huazhong University of Science and Technology. Medical sciences","confidence":"Low","confidence_rationale":"Tier 3 — single lab, yeast two-hybrid plus single Co-IP confirmation, no functional follow-up on ANKRD17 mechanism","pmids":["21671165"],"is_preprint":false},{"year":2012,"finding":"ANKRD17 expression in mouse testis is predominantly restricted to pachytene spermatocytes and round spermatids; ANKRD17 protein is diffusely distributed throughout the nucleus of pachytene cells but excluded from the XY body and other heterochromatic regions, supporting a role in meiotic prophase.","method":"In situ hybridization, immunofluorescence in developing mouse testis","journal":"Biology of reproduction","confidence":"Medium","confidence_rationale":"Tier 2 — direct localization by immunofluorescence and ISH with cell-type specificity defined","pmids":["22190705"],"is_preprint":false},{"year":2021,"finding":"Influenza A virus PA-X protein interacts with Ankrd17 via Ankrd17's N-terminal ankyrin repeat domain, preferring PA-X over PA. This interaction suppresses Ankrd17-mediated innate immune (RLR pathway) responses. Ankrd17 knockout and overexpression experiments confirmed that PA-X significantly modulates the Ankrd17-dependent host immune response to IAV infection.","method":"Co-immunoprecipitation, domain mapping, Ankrd17 knockout and overexpression, immune signaling assays","journal":"Microbiology and immunology","confidence":"Medium","confidence_rationale":"Tier 2-3 — Co-IP with domain mapping and genetic KO/OE functional validation, single lab","pmids":["33241870"],"is_preprint":false},{"year":2021,"finding":"Heterozygous loss-of-function ANKRD17 variants cause a neurodevelopmental syndrome (Chopra-Amiel-Gordon syndrome) via haploinsufficiency. Protein modeling indicates that missense variants disrupt ankyrin repeat stability through alteration of core structural residues. Single-cell RNA-seq data confirmed ANKRD17 expression across multiple stages of neurogenesis in the developing human telencephalon.","method":"Clinical cohort genetics, protein structural modeling, single-cell RNA-seq","journal":"American journal of human genetics","confidence":"Medium","confidence_rationale":"Tier 3-4 — large cohort with structural modeling but primarily genetic/genomic evidence; no in vitro reconstitution of mechanism","pmids":["33909992"],"is_preprint":false},{"year":2025,"finding":"Ankrd17 haploinsufficiency in mouse models produces deficits in social behavior, spatial learning and memory, and elevated anxiety. Ankrd17 knockdown in neural contexts is associated with dysregulation of synaptic proteins and mitochondrial function, and impaired neural circuits.","method":"Mouse behavioral assays (social behavior, Morris water maze), Ankrd17 knockdown, synaptic and mitochondrial protein analysis","journal":"Journal of neurodevelopmental disorders","confidence":"Medium","confidence_rationale":"Tier 2-3 — in vivo mouse model with defined behavioral and molecular phenotypes, single study","pmids":["40604385"],"is_preprint":false},{"year":2025,"finding":"ANKRD17 overexpression in mouse liver tumors and human liver cell lines increases tumor load, EMT marker expression, cellular motility, and invasion. ANKRD17 upregulates the pro-metastatic receptor DDR1, and DDR1 suppression reduces motility and invasion without affecting AKT signaling, placing DDR1 downstream of ANKRD17 in a pro-metastatic pathway.","method":"Reverse genetics (overexpression and knockdown), in vitro invasion/migration assays, EMT marker analysis, DDR1 suppression epistasis","journal":"iScience","confidence":"Medium","confidence_rationale":"Tier 2-3 — multiple cell line and in vivo experiments with epistasis placement of DDR1, single lab","pmids":["40458187"],"is_preprint":false},{"year":2016,"finding":"Mask2 (the human ANKRD17 ortholog, also called ANKRD17) is required for YAP-induced bladder cancer cell growth and migration. Knockdown of Mask2 suppresses YAP-driven upregulation of Hippo pathway target genes and inhibits YAP-induced cell growth and migration, establishing Mask2/ANKRD17 as a functional co-factor of YAP in the Hippo pathway.","method":"siRNA knockdown, overexpression, cell proliferation and migration assays, target gene expression analysis","journal":"Journal of Cancer","confidence":"Medium","confidence_rationale":"Tier 2-3 — gain- and loss-of-function with pathway target gene readouts, single lab","pmids":["27877230"],"is_preprint":false},{"year":2024,"finding":"A disease-associated ANKRD17 mutation affects an essential short linear motif (SLiM) required for normal cell proliferation. Genome-wide base editing screening identified this SLiM as functionally important, and binding partners for ANKRD17's essential SLiM were identified, providing mechanistic insight into how the ANKRD17 mutation causes cellular dysfunction.","method":"Base editing genome-wide screen, SLiM mutagenesis, binding partner identification by proteomics","journal":"bioRxiv","confidence":"Medium","confidence_rationale":"Tier 2 — systematic genome-wide screen with mechanistic follow-up; preprint only","pmids":[],"is_preprint":true}],"current_model":"ANKRD17 is a large ankyrin repeat-containing protein that functions as a Cyclin E/Cdk2 substrate required for G1/S transition and DNA replication (via interactions with MCM proteins, Cdc6, and PCNA); it acts as a positive regulator of innate immune signaling through physical interaction with the RLR pathway components RIG-I, MDA5, and VISA/MAVS and with NOD1/NOD2; it is essential for vascular maturation during embryogenesis; it functions as a co-factor of YAP in the Hippo pathway; and heterozygous loss-of-function variants cause a neurodevelopmental syndrome (Chopra-Amiel-Gordon syndrome) associated with synaptic and mitochondrial dysfunction."},"narrative":{"teleology":[{"year":2009,"claim":"Identification of ANKRD17 as a Cyclin E/Cdk2 substrate that promotes DNA replication factor loading established its role as a cell cycle regulator required for the G1/S transition.","evidence":"TAP-tag purification, Co-IP, in vitro kinase assay, siRNA knockdown with cell cycle analysis in human cell lines","pmids":["19150984"],"confidence":"High","gaps":["How Cdk2-mediated phosphorylation of ANKRD17 mechanistically regulates Cdc6/PCNA loading is unknown","No structural model of the ANKRD17–replication factor complexes exists","Whether ANKRD17's cell cycle function is linked to its ankyrin repeat domain is untested"]},{"year":2009,"claim":"Genetic knockout in mice revealed that Ankrd17 is essential for embryonic vascular maturation, establishing an in vivo developmental requirement beyond cell culture proliferation.","evidence":"Ankrd17 homozygous knockout mice with histological and marker gene analysis","pmids":["19619540"],"confidence":"High","gaps":["The cell-autonomous versus non-cell-autonomous basis of the vascular smooth muscle cell defect is unresolved","Why vSMC differentiation markers are paradoxically upregulated in mutants is unexplained"]},{"year":2012,"claim":"Discovery that ANKRD17 physically interacts with RIG-I, MDA5, and MAVS and enhances RLR-mediated IFN-β induction revealed a second major function as a positive innate immune signaling scaffold.","evidence":"Reciprocal Co-IP, domain mapping of ankyrin repeats, gain- and loss-of-function with IRF-3/NF-κB/IFN-β reporter assays","pmids":["22328336"],"confidence":"High","gaps":["The stoichiometry and dynamics of ANKRD17 within the RLR signalosome are undefined","Whether ANKRD17's immune and cell cycle roles are coordinately regulated is unknown"]},{"year":2013,"claim":"Extending innate immune involvement, ANKRD17 was shown to bind NOD2 and support NOD1/NOD2-dependent pro-inflammatory responses, broadening its scope from RLR to NLR pathways.","evidence":"Co-IP with domain mapping, siRNA knockdown, overexpression, Shigella infection assay in myeloid and epithelial cells","pmids":["23711367"],"confidence":"Medium","gaps":["The structural basis for ANKRD17 engaging both RLR and NLR components via different domains awaits detailed mapping","Single-lab finding not yet independently replicated"]},{"year":2016,"claim":"Demonstrating that ANKRD17 (Mask2) is required for YAP-driven transcription of Hippo pathway target genes connected this scaffold to growth-regulatory signaling beyond the cell cycle machinery.","evidence":"siRNA knockdown and overexpression with cell proliferation, migration, and target gene expression assays in bladder cancer cells","pmids":["27877230"],"confidence":"Medium","gaps":["Whether ANKRD17 binds YAP directly or via intermediates is unresolved","The domain within ANKRD17 mediating Hippo co-activation is not mapped"]},{"year":2021,"claim":"Influenza A virus PA-X protein was found to target ANKRD17's ankyrin repeats to suppress RLR-mediated immunity, providing evidence that pathogens actively antagonize ANKRD17's immune scaffold function.","evidence":"Co-IP, domain mapping, Ankrd17 knockout and overexpression with immune signaling readouts during IAV infection","pmids":["33241870"],"confidence":"Medium","gaps":["Whether other viral immune evasion proteins similarly target ANKRD17 is unexplored","Mechanism by which PA-X binding inhibits ANKRD17's scaffolding activity is undefined"]},{"year":2021,"claim":"Human genetic studies established that heterozygous ANKRD17 loss-of-function causes Chopra–Amiel–Gordon syndrome, linking the protein to neurodevelopment and revealing haploinsufficiency as the disease mechanism.","evidence":"Multi-family cohort genetics, protein structural modeling of ankyrin repeat-disrupting missense variants, scRNA-seq of developing human brain","pmids":["33909992"],"confidence":"Medium","gaps":["No in vitro or cellular reconstitution of how specific variants disrupt ANKRD17 function","Which of ANKRD17's known molecular roles (cell cycle, immune, Hippo) is most critical in neural progenitors is unknown"]},{"year":2025,"claim":"Mouse haploinsufficiency models recapitulated neurobehavioral deficits and revealed synaptic protein dysregulation and mitochondrial dysfunction, providing mechanistic correlates for the human neurodevelopmental phenotype.","evidence":"Ankrd17 heterozygous mice and knockdown models with behavioral testing (Morris water maze, social behavior), synaptic and mitochondrial protein profiling","pmids":["40604385"],"confidence":"Medium","gaps":["Direct molecular link between ANKRD17 and mitochondrial function has not been established","Whether synaptic defects are cell-autonomous is unresolved"]},{"year":2025,"claim":"ANKRD17 overexpression was shown to promote liver tumor metastasis by upregulating DDR1, placing ANKRD17 in a pro-metastatic signaling axis.","evidence":"Overexpression and knockdown with invasion/migration assays and DDR1 epistasis in mouse liver tumors and human liver cell lines","pmids":["40458187"],"confidence":"Medium","gaps":["Whether ANKRD17 regulates DDR1 transcriptionally or post-transcriptionally is not defined","Relevance to human liver cancer is based on cell lines; clinical validation is lacking"]},{"year":null,"claim":"How ANKRD17 integrates its cell cycle, innate immune, Hippo pathway, and neurodevelopmental functions through its multi-domain architecture remains the central unresolved question.","evidence":"","pmids":[],"confidence":"Low","gaps":["No high-resolution structure of full-length ANKRD17 or its key domain complexes exists","The logic governing which function dominates in a given cellular context is unknown","Whether ANKRD17's essential SLiM identified by base editing links to its known interaction partners requires validation beyond preprint"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[0,2,3,10]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,5]}],"pathway":[{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[0]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[2,3,6]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[10]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[1,7]}],"complexes":[],"partners":["CCNE1","CDK2","DDX58","IFIH1","MAVS","NOD2","YAP1","PCNA"],"other_free_text":[]},"mechanistic_narrative":"ANKRD17 is a large, multifunctional ankyrin repeat scaffold protein that participates in cell cycle progression, innate immune signaling, Hippo pathway co-activation, and neurodevelopment. It serves as a Cyclin E/Cdk2 substrate that facilitates loading of replication factors Cdc6 and PCNA onto DNA to promote S-phase entry, and its depletion triggers p53/p21-dependent cell cycle arrest [PMID:19150984]. ANKRD17 amplifies RIG-I/MDA5–MAVS-mediated type I interferon responses and NOD1/NOD2-driven pro-inflammatory signaling through direct physical interactions mediated by its ankyrin repeat domain [PMID:22328336, PMID:23711367], and it functions as a YAP co-factor in Hippo pathway target gene expression [PMID:27877230]. Heterozygous loss-of-function variants cause Chopra–Amiel–Gordon syndrome, a neurodevelopmental disorder associated with synaptic and mitochondrial dysfunction [PMID:33909992, PMID:40604385]."},"prefetch_data":{"uniprot":{"accession":"O75179","full_name":"Ankyrin repeat domain-containing protein 17","aliases":["Gene trap ankyrin repeat protein","Serologically defined breast cancer antigen NY-BR-16"],"length_aa":2603,"mass_kda":274.3,"function":"Could play pivotal roles in cell cycle and DNA regulation (PubMed:19150984). Involved in innate immune defense against viruse by positively regulating the viral dsRNA receptors DDX58 and IFIH1 signaling pathways (PubMed:22328336). Involves in NOD2- and NOD1-mediated responses to bacteria suggesting a role in innate antibacterial immune pathways too (PubMed:23711367). Target of enterovirus 71 which is the major etiological agent of HFMD (hand, foot and mouth disease) (PubMed:17276651). Could play a central role for the formation and/or maintenance of the blood vessels of the circulation system (By similarity)","subcellular_location":"Cytoplasm; Nucleus","url":"https://www.uniprot.org/uniprotkb/O75179/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ANKRD17","classification":"Not Classified","n_dependent_lines":202,"n_total_lines":1208,"dependency_fraction":0.1672185430463576},"opencell":{"profiled":true,"resolved_as":"","ensg_id":"ENSG00000132466","cell_line_id":"CID001386","localizations":[{"compartment":"cytoplasmic","grade":3},{"compartment":"nucleoplasm","grade":1}],"interactors":[{"gene":"HOXB6","stoichiometry":4.0},{"gene":"ANKHD1","stoichiometry":0.2},{"gene":"LONP1","stoichiometry":0.2},{"gene":"CAPZB","stoichiometry":0.2},{"gene":"DDOST","stoichiometry":0.2},{"gene":"ILF3","stoichiometry":0.2},{"gene":"KIAA0368","stoichiometry":0.2},{"gene":"OST4","stoichiometry":0.2},{"gene":"PSPC1","stoichiometry":0.2},{"gene":"RPS16","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/target/CID001386","total_profiled":1310},"omim":[{"mim_id":"619504","title":"CHOPRA-AMIEL-GORDON SYNDROME; CAGS","url":"https://www.omim.org/entry/619504"},{"mim_id":"615929","title":"ANKYRIN REPEAT DOMAIN-CONTAINING PROTEIN 17; ANKRD17","url":"https://www.omim.org/entry/615929"},{"mim_id":"248510","title":"MANNOSIDOSIS, BETA A, LYSOSOMAL; MANSB","url":"https://www.omim.org/entry/248510"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"},{"location":"Nuclear membrane","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ANKRD17"},"hgnc":{"alias_symbol":["GTAR","KIAA0697","FLJ22206","NY-BR-16","MASK2"],"prev_symbol":[]},"alphafold":{"accession":"O75179","domains":[{"cath_id":"1.25.40.20","chopping":"238-334","consensus_level":"medium","plddt":87.3971,"start":238,"end":334},{"cath_id":"1.25.40.20","chopping":"623-721","consensus_level":"medium","plddt":92.6989,"start":623,"end":721},{"cath_id":"1.25.40.20","chopping":"1355-1463","consensus_level":"medium","plddt":91.9277,"start":1355,"end":1463},{"cath_id":"3.30.1370.10","chopping":"1727-1802","consensus_level":"medium","plddt":80.7696,"start":1727,"end":1802}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/O75179","model_url":"https://alphafold.ebi.ac.uk/files/AF-O75179-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-O75179-F1-predicted_aligned_error_v6.png","plddt_mean":53.38},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ANKRD17","jax_strain_url":"https://www.jax.org/strain/search?query=ANKRD17"},"sequence":{"accession":"O75179","fasta_url":"https://rest.uniprot.org/uniprotkb/O75179.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/O75179/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/O75179"}},"corpus_meta":[{"pmid":"22211723","id":"PMC_22211723","title":"The 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ANKRD17 localizes to the nucleus and interacts with DNA replication factors MCM family members, Cdc6, and PCNA. Depletion of ANKRD17 decreases loading of Cdc6 and PCNA onto DNA, blocks S-phase entry, and up-regulates p53 and p21.\",\n      \"method\": \"TAP-tag purification, co-immunoprecipitation, in vitro kinase assay, siRNA knockdown, flow cytometry, chromatin fractionation\",\n      \"journal\": \"The Journal of Biological Chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 — multiple orthogonal methods (biochemical purification, in vitro phosphorylation, functional knockdown with defined readouts) in a single rigorous study\",\n      \"pmids\": [\"19150984\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Ankrd17 is essential for vascular integrity during mouse embryogenesis; Ankrd17-null mice die at E10.5–E11.5 with cardiovascular defects, hemorrhage, and severely reduced vascular smooth muscle cells surrounding vessels, indicating a required role in vascular maturation.\",\n      \"method\": \"Gene targeting (knockout mouse), histology, immunostaining, RT-PCR for vSMC marker genes\",\n      \"journal\": \"FEBS Letters\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean knockout with defined cardiovascular phenotype and vSMC marker analysis\",\n      \"pmids\": [\"19619540\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ANKRD17 interacts with RIG-I, MDA5, and VISA (MAVS) through its ankyrin repeat domain, enhances their interactions with each other, and positively regulates RLR-mediated IRF-3/NF-κB activation and IFN-β transcription. Knockdown of ANKRD17 impairs RLR signaling.\",\n      \"method\": \"Co-immunoprecipitation, overexpression, siRNA knockdown, luciferase reporter assays for IRF-3/NF-κB/IFN-β, domain-mapping experiments\",\n      \"journal\": \"European Journal of Immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP plus functional gain/loss-of-function with defined pathway readouts and domain mapping\",\n      \"pmids\": [\"22328336\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"ANKRD17 binds Nod2 (and functionally engages Nod1) through its N-terminal domain and is required for Nod1/Nod2-mediated pro-inflammatory NF-κB responses in human myeloid and epithelial cells, as well as for pro-inflammatory responses to Shigella flexneri infection.\",\n      \"method\": \"Co-immunoprecipitation, domain-mapping, siRNA knockdown, overexpression, NF-κB reporter assays, Shigella infection assay\",\n      \"journal\": \"FEBS Letters\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — Co-IP with domain mapping and functional knockdown/overexpression, single lab\",\n      \"pmids\": [\"23711367\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ANKRD17 is expressed predominantly in pachytene spermatocytes and round spermatids in the mouse testis; within pachytene cells it is diffusely distributed throughout the nucleus but excluded from the XY body and heterochromatic regions, implicating it in meiotic prophase.\",\n      \"method\": \"In situ hybridization, immunofluorescence in mouse testis sections\",\n      \"journal\": \"Biology of Reproduction\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct localization with cell-type and subnuclear specificity, single study\",\n      \"pmids\": [\"22190705\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"ANKRD17 interacts with murine cytomegalovirus IE3 protein; mapping showed that residues 1–148 of IE3 are responsible for the interaction, suggesting ANKRD17 as a host target manipulated during CMV infection.\",\n      \"method\": \"Yeast two-hybrid screening and co-immunoprecipitation (chemiluminescent); domain-mapping of IE3\",\n      \"journal\": \"Journal of Huazhong University of Science and Technology. Medical Sciences\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 — single lab, yeast two-hybrid plus one Co-IP, no functional consequence characterized\",\n      \"pmids\": [\"21671165\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Influenza A virus PA-X protein directly interacts with ANKRD17 (preferentially over PA) via ANKRD17's N-terminal ankyrin repeat domain, and suppresses ANKRD17-mediated innate immune responses; ANKRD17 knockout and overexpression confirmed PA-X modulates ANKRD17-dependent RLR signaling.\",\n      \"method\": \"Co-immunoprecipitation, domain mapping, ANKRD17 knockout and overexpression, innate immune signaling assays\",\n      \"journal\": \"Microbiology and Immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — Co-IP with domain mapping plus genetic knockout/overexpression functional validation, single lab\",\n      \"pmids\": [\"33241870\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ANKRD17 (Mask2) functions as a transcriptional cofactor required for YAP-induced target gene expression (Hippo pathway), cell growth, and migration in bladder cancer cells; knockdown of Mask2 suppresses YAP-driven upregulation of Hippo target genes.\",\n      \"method\": \"siRNA knockdown, overexpression, RT-qPCR of Hippo target genes, cell proliferation and migration assays\",\n      \"journal\": \"Journal of Cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — functional epistasis between YAP and Mask2 with defined transcriptional readouts, single lab\",\n      \"pmids\": [\"27877230\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"Ankrd17 haploinsufficiency in mouse models causes deficits in social behavior, spatial learning/memory, and elevated anxiety, associated with dysregulation of synaptic proteins and impaired mitochondrial function following Ankrd17 knockdown, placing ANKRD17 in pathways controlling synapse biology and mitochondrial homeostasis in neurons.\",\n      \"method\": \"Trio-WES in patients, mouse Ankrd17 haploinsufficiency behavioral assays, synaptic and mitochondrial protein analysis after Ankrd17 knockdown\",\n      \"journal\": \"Journal of Neurodevelopmental Disorders\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — loss-of-function mouse model with defined behavioral and molecular phenotypes, single study\",\n      \"pmids\": [\"40604385\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ANKRD17 overexpression in mouse liver tumors and human liver cell lines increases EMT marker expression, cellular motility, and invasion; knockdown reverses these effects. The pro-metastatic receptor tyrosine kinase DDR1 is upregulated downstream of ANKRD17, and DDR1 suppression reduces motility/invasion without affecting AKT signaling.\",\n      \"method\": \"Reverse genetics (overexpression and knockdown), EMT marker immunoblotting, motility/invasion assays, epistasis with DDR1 knockdown\",\n      \"journal\": \"iScience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — gain and loss of function with defined pathway readout (DDR1 epistasis), single lab\",\n      \"pmids\": [\"40458187\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"A proteome-wide SLiM dependency screen identified a disease-associated ANKRD17 mutation affecting a short linear motif required for normal cell proliferation, and binding partners for this SLiM were identified, providing mechanistic insight into how this variant disrupts protein interactions.\",\n      \"method\": \"Base-editing SLiM mutagenesis screen in HAP1 and RPE1 cells, binding partner identification by proteomics\",\n      \"journal\": \"bioRxiv\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — systematic base-editing screen replicated across cell lines with binding partner identification; preprint not yet peer-reviewed\",\n      \"pmids\": [\"bio_10.1101_2024.09.11.612445\"],\n      \"is_preprint\": true\n    }\n  ],\n  \"current_model\": \"ANKRD17 is an ankyrin repeat-containing nuclear protein that acts as a downstream effector of cyclin E/Cdk2 (phosphorylated at Ser1791/1794/2150 via an RXL docking motif) to promote DNA replication pre-initiation complex loading (Cdc6, PCNA, MCMs) and G1/S progression; it also functions as a positive scaffold in innate immune signaling by bridging RIG-I/MDA5 to MAVS and facilitating Nod1/Nod2-dependent NF-κB responses through its N-terminal ankyrin repeats, serves as a transcriptional co-factor for YAP in the Hippo pathway, and is essential for vascular smooth muscle maturation during embryogenesis—with its ankyrin repeat domain being exploited by viral proteins (influenza PA-X, CMV IE3) to subvert host immunity.\"\n}\n```\n\n--- ROUND 2 (R2/R3, augmented corpus) ---\n\n```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2009,\n      \"finding\": \"ANKRD17 (Ankrd17) was identified as a novel substrate of Cyclin E/Cdk2. It associates with Cyclin E/Cdk2 via an RXL motif at its C-terminus and is phosphorylated at Ser1791, Ser1794, and Ser2150. ANKRD17 interacts with DNA replication factors MCM family members, Cdc6, and PCNA in the nucleus, and its depletion reduces Cdc6 and PCNA loading onto DNA, blocking S-phase entry and upregulating p53 and p21.\",\n      \"method\": \"TAP-tag purification, Co-immunoprecipitation, siRNA knockdown, in vitro kinase assay, cell cycle analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods (TAP purification, Co-IP, kinase assay, siRNA, functional rescue) in a single study\",\n      \"pmids\": [\"19150984\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Homozygous knockout of Ankrd17 in mice causes embryonic lethality between E10.5 and E11.5 due to cardiovascular defects, including hemorrhage and drastically reduced vascular smooth muscle cells (vSMCs) surrounding vessels, indicating Ankrd17 is essential for vascular maturation. Notably, vSMC differentiation marker genes were paradoxically upregulated in mutant embryos.\",\n      \"method\": \"Gene targeting/knockout mouse, histology, marker gene expression analysis\",\n      \"journal\": \"FEBS letters\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean in vivo genetic knockout with defined phenotypic readout\",\n      \"pmids\": [\"19619540\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Ankrd17 positively regulates RIG-I-like receptor (RLR)-mediated innate immune signaling. It physically interacts with RIG-I, MDA5, and VISA (MAVS), and its ankyrin repeat domain is required for these interactions. Overexpression of Ankrd17 enhances RIG-I/MDA5-VISA interaction and promotes IRF-3 and NF-κB activation and IFN-β transcription, while knockdown impairs RLR signaling.\",\n      \"method\": \"Co-immunoprecipitation, overexpression, siRNA knockdown, reporter assays (IRF-3, NF-κB, IFN-β luciferase), domain mapping\",\n      \"journal\": \"European journal of immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP, domain mapping, and orthogonal functional assays with both gain- and loss-of-function\",\n      \"pmids\": [\"22328336\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Ankrd17 is a novel binding partner of NOD2 (and functionally involved in NOD1 signaling), with its N-terminal domain mediating NOD2 binding. Knockdown and overexpression showed Ankrd17 is required for NOD1/NOD2-mediated pro-inflammatory responses in human myeloid and epithelial cells and contributes to responses induced by Shigella flexneri infection, but not to type I interferon responses triggered by Sendai virus.\",\n      \"method\": \"Co-immunoprecipitation, domain mapping, siRNA knockdown, overexpression, bacterial infection assays, reporter assays\",\n      \"journal\": \"FEBS letters\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — Co-IP with domain mapping and functional knockdown/overexpression, single lab\",\n      \"pmids\": [\"23711367\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Murine cytomegalovirus (MCMV) IE3 protein interacts with Ankrd17, with the N-terminal 1–148 residues of IE3 responsible for the interaction, as identified by yeast two-hybrid screening and confirmed by co-immunoprecipitation.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, domain mapping\",\n      \"journal\": \"Journal of Huazhong University of Science and Technology. Medical sciences\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 — single lab, yeast two-hybrid plus single Co-IP confirmation, no functional follow-up on ANKRD17 mechanism\",\n      \"pmids\": [\"21671165\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ANKRD17 expression in mouse testis is predominantly restricted to pachytene spermatocytes and round spermatids; ANKRD17 protein is diffusely distributed throughout the nucleus of pachytene cells but excluded from the XY body and other heterochromatic regions, supporting a role in meiotic prophase.\",\n      \"method\": \"In situ hybridization, immunofluorescence in developing mouse testis\",\n      \"journal\": \"Biology of reproduction\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct localization by immunofluorescence and ISH with cell-type specificity defined\",\n      \"pmids\": [\"22190705\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Influenza A virus PA-X protein interacts with Ankrd17 via Ankrd17's N-terminal ankyrin repeat domain, preferring PA-X over PA. This interaction suppresses Ankrd17-mediated innate immune (RLR pathway) responses. Ankrd17 knockout and overexpression experiments confirmed that PA-X significantly modulates the Ankrd17-dependent host immune response to IAV infection.\",\n      \"method\": \"Co-immunoprecipitation, domain mapping, Ankrd17 knockout and overexpression, immune signaling assays\",\n      \"journal\": \"Microbiology and immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — Co-IP with domain mapping and genetic KO/OE functional validation, single lab\",\n      \"pmids\": [\"33241870\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Heterozygous loss-of-function ANKRD17 variants cause a neurodevelopmental syndrome (Chopra-Amiel-Gordon syndrome) via haploinsufficiency. Protein modeling indicates that missense variants disrupt ankyrin repeat stability through alteration of core structural residues. Single-cell RNA-seq data confirmed ANKRD17 expression across multiple stages of neurogenesis in the developing human telencephalon.\",\n      \"method\": \"Clinical cohort genetics, protein structural modeling, single-cell RNA-seq\",\n      \"journal\": \"American journal of human genetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3-4 — large cohort with structural modeling but primarily genetic/genomic evidence; no in vitro reconstitution of mechanism\",\n      \"pmids\": [\"33909992\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"Ankrd17 haploinsufficiency in mouse models produces deficits in social behavior, spatial learning and memory, and elevated anxiety. Ankrd17 knockdown in neural contexts is associated with dysregulation of synaptic proteins and mitochondrial function, and impaired neural circuits.\",\n      \"method\": \"Mouse behavioral assays (social behavior, Morris water maze), Ankrd17 knockdown, synaptic and mitochondrial protein analysis\",\n      \"journal\": \"Journal of neurodevelopmental disorders\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — in vivo mouse model with defined behavioral and molecular phenotypes, single study\",\n      \"pmids\": [\"40604385\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ANKRD17 overexpression in mouse liver tumors and human liver cell lines increases tumor load, EMT marker expression, cellular motility, and invasion. ANKRD17 upregulates the pro-metastatic receptor DDR1, and DDR1 suppression reduces motility and invasion without affecting AKT signaling, placing DDR1 downstream of ANKRD17 in a pro-metastatic pathway.\",\n      \"method\": \"Reverse genetics (overexpression and knockdown), in vitro invasion/migration assays, EMT marker analysis, DDR1 suppression epistasis\",\n      \"journal\": \"iScience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — multiple cell line and in vivo experiments with epistasis placement of DDR1, single lab\",\n      \"pmids\": [\"40458187\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Mask2 (the human ANKRD17 ortholog, also called ANKRD17) is required for YAP-induced bladder cancer cell growth and migration. Knockdown of Mask2 suppresses YAP-driven upregulation of Hippo pathway target genes and inhibits YAP-induced cell growth and migration, establishing Mask2/ANKRD17 as a functional co-factor of YAP in the Hippo pathway.\",\n      \"method\": \"siRNA knockdown, overexpression, cell proliferation and migration assays, target gene expression analysis\",\n      \"journal\": \"Journal of Cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — gain- and loss-of-function with pathway target gene readouts, single lab\",\n      \"pmids\": [\"27877230\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"A disease-associated ANKRD17 mutation affects an essential short linear motif (SLiM) required for normal cell proliferation. Genome-wide base editing screening identified this SLiM as functionally important, and binding partners for ANKRD17's essential SLiM were identified, providing mechanistic insight into how the ANKRD17 mutation causes cellular dysfunction.\",\n      \"method\": \"Base editing genome-wide screen, SLiM mutagenesis, binding partner identification by proteomics\",\n      \"journal\": \"bioRxiv\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — systematic genome-wide screen with mechanistic follow-up; preprint only\",\n      \"pmids\": [],\n      \"is_preprint\": true\n    }\n  ],\n  \"current_model\": \"ANKRD17 is a large ankyrin repeat-containing protein that functions as a Cyclin E/Cdk2 substrate required for G1/S transition and DNA replication (via interactions with MCM proteins, Cdc6, and PCNA); it acts as a positive regulator of innate immune signaling through physical interaction with the RLR pathway components RIG-I, MDA5, and VISA/MAVS and with NOD1/NOD2; it is essential for vascular maturation during embryogenesis; it functions as a co-factor of YAP in the Hippo pathway; and heterozygous loss-of-function variants cause a neurodevelopmental syndrome (Chopra-Amiel-Gordon syndrome) associated with synaptic and mitochondrial dysfunction.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"ANKRD17 is a large ankyrin repeat-containing nuclear protein that participates in cell cycle control, innate immune signaling, transcriptional co-activation, and embryonic development. As a cyclin E/Cdk2 substrate phosphorylated at Ser1791/Ser1794/Ser2150 via an RXL docking motif, ANKRD17 promotes loading of Cdc6, PCNA, and MCM replication factors onto DNA and is required for G1/S progression [PMID:19150984]. Through its N-terminal ankyrin repeat domain, ANKRD17 scaffolds RIG-I/MDA5–MAVS interactions to activate IRF-3/NF-κB–dependent interferon-β transcription and facilitates Nod1/Nod2-mediated NF-κB signaling, functions that are directly targeted by viral antagonists including influenza PA-X and CMV IE3 [PMID:22328336, PMID:23711367, PMID:33241870]. ANKRD17 also acts as a transcriptional cofactor for YAP in the Hippo pathway to drive target gene expression and cell growth [PMID:27877230], and is essential for vascular smooth muscle maturation during embryogenesis, as Ankrd17-null mice die at midgestation with cardiovascular defects [PMID:19619540].\",\n  \"teleology\": [\n    {\n      \"year\": 2009,\n      \"claim\": \"Establishing ANKRD17 as a cell-cycle effector: prior to this work, how ankyrin-repeat proteins linked cyclin E/Cdk2 to replication licensing was unknown; this study showed ANKRD17 is an RXL-dependent cyclin E/Cdk2 substrate required for Cdc6/PCNA/MCM loading and S-phase entry, placing it as a direct link between cyclin E activity and pre-initiation complex assembly.\",\n      \"evidence\": \"TAP-tag purification, in vitro kinase assay, siRNA depletion with chromatin fractionation and flow cytometry in human cells\",\n      \"pmids\": [\"19150984\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"How phosphorylation at Ser1791/1794/2150 mechanistically triggers replication factor loading is undefined\",\n        \"Whether ANKRD17 acts in a complex or as a direct chromatin-binding scaffold for MCMs/Cdc6 is unresolved\",\n        \"No structural information for ANKRD17 or its phospho-dependent conformational changes\"\n      ]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Demonstrating an essential developmental role: the in vivo requirement of ANKRD17 was unknown; knockout mice revealed embryonic lethality with loss of vascular smooth muscle cells, establishing ANKRD17 as essential for cardiovascular morphogenesis.\",\n      \"evidence\": \"Gene-targeted Ankrd17-null mice, histology and immunostaining for vSMC markers\",\n      \"pmids\": [\"19619540\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"The molecular mechanism by which ANKRD17 promotes vSMC differentiation is uncharacterized\",\n        \"Whether the vascular defect reflects a cell-cycle role, a signaling role, or both is unresolved\"\n      ]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Revealing a scaffolding function in RLR innate immunity: how RIG-I/MDA5 signaling was amplified by ankyrin-repeat adaptors was unclear; ANKRD17 was shown to bridge RIG-I and MDA5 to MAVS via its ankyrin repeat domain, enhancing IRF-3/NF-κB activation and IFN-β production.\",\n      \"evidence\": \"Reciprocal Co-IP, siRNA knockdown, overexpression, luciferase reporters for IRF-3/NF-κB/IFN-β, domain mapping\",\n      \"pmids\": [\"22328336\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"Stoichiometry and structural basis of the ANKRD17–RIG-I/MDA5–MAVS complex are unknown\",\n        \"In vivo immune phenotype of ANKRD17 deficiency in immune cells has not been tested\"\n      ]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Extending the innate immune scaffold model to NLR signaling: whether ANKRD17 operated beyond RLR pathways was unknown; it was found to bind Nod2 and support Nod1/Nod2-dependent NF-κB responses, including during Shigella infection, broadening its role to bacterial pattern recognition.\",\n      \"evidence\": \"Co-IP, domain mapping, siRNA/overexpression, NF-κB reporters, Shigella flexneri infection in human myeloid and epithelial cells\",\n      \"pmids\": [\"23711367\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Direct binding to Nod1 was not shown; functional synergy was inferred\",\n        \"Mechanism by which ANKRD17 enhances NLR signalosome assembly is unclear\",\n        \"Single-lab finding without independent replication\"\n      ]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Identifying ANKRD17 as a YAP transcriptional cofactor: the Drosophila Mask orthologs were known Hippo effectors, but mammalian ANKRD17/Mask2 had not been functionally connected to YAP; knockdown of ANKRD17 suppressed YAP-driven target gene expression, growth, and migration.\",\n      \"evidence\": \"siRNA knockdown and overexpression in bladder cancer cells, RT-qPCR of Hippo target genes, proliferation and migration assays\",\n      \"pmids\": [\"27877230\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Direct physical interaction between ANKRD17 and YAP/TEAD has not been biochemically characterized in mammalian cells\",\n        \"The domain of ANKRD17 responsible for Hippo cofactor activity is unmapped\"\n      ]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Demonstrating viral exploitation of ANKRD17's immune scaffold: how influenza counteracted ANKRD17-mediated immunity was unknown; PA-X was shown to bind ANKRD17's ankyrin repeat domain and suppress ANKRD17-dependent RLR signaling, establishing ANKRD17 as a viral immune evasion target.\",\n      \"evidence\": \"Co-IP, domain mapping, ANKRD17 knockout and overexpression, innate immune signaling assays\",\n      \"pmids\": [\"33241870\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether PA-X degrades ANKRD17 mRNA/protein or merely sequesters it is not fully resolved\",\n        \"In vivo relevance for viral pathogenesis not tested\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Linking ANKRD17 haploinsufficiency to neurodevelopmental phenotypes: the neuronal function of ANKRD17 was unexplored; heterozygous mice showed social behavior deficits, impaired spatial learning, and anxiety, accompanied by synaptic protein dysregulation and mitochondrial dysfunction, implicating ANKRD17 in synapse and mitochondrial homeostasis.\",\n      \"evidence\": \"Trio-WES in patients, Ankrd17 haploinsufficient mouse behavioral assays, synaptic/mitochondrial protein analysis after knockdown\",\n      \"pmids\": [\"40604385\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Causal link between mitochondrial defects and behavioral phenotypes is correlative\",\n        \"Whether the neuronal role involves known ANKRD17 pathways (cell cycle, Hippo, innate immunity) or a distinct mechanism is unresolved\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Connecting ANKRD17 to epithelial-mesenchymal transition and metastasis: ANKRD17's oncogenic functions were unknown; overexpression promoted EMT and invasion via upregulation of receptor tyrosine kinase DDR1, and epistasis experiments placed DDR1 downstream of ANKRD17 in promoting motility.\",\n      \"evidence\": \"Overexpression/knockdown in liver cancer cell lines, EMT marker analysis, DDR1 epistasis by knockdown, motility and invasion assays\",\n      \"pmids\": [\"40458187\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether ANKRD17 transcriptionally activates DDR1 or stabilizes its protein is not determined\",\n        \"Relationship to YAP cofactor function in tumor cells not tested\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"A unifying mechanism explaining how a single ankyrin-repeat scaffold coordinates cell-cycle progression, innate immune signaling, Hippo-pathway transcription, vascular development, and neuronal function remains to be established; the structural basis of ANKRD17's multivalent interactions is unknown.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No high-resolution structure of ANKRD17 or its ankyrin repeat domain exists\",\n        \"Domain-specific separation-of-function mutants distinguishing cell-cycle, immune, and Hippo roles have not been generated\",\n        \"Context-dependent regulation of ANKRD17 (post-translational modifications beyond cyclin E phosphorylation) is largely unexplored\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [2, 3, 6]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [7]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 4]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [2, 3, 6]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [7]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [1]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"RIG-I\", \"MDA5\", \"MAVS\", \"NOD2\", \"YAP\", \"CDC6\", \"PCNA\", \"CCNE1\"],\n    \"other_free_text\": []\n  }\n}\n```\n\n--- ROUND 2 (R2/R3, augmented corpus) ---\n\n```json\n{\n  \"mechanistic_narrative\": \"ANKRD17 is a large, multifunctional ankyrin repeat scaffold protein that participates in cell cycle progression, innate immune signaling, Hippo pathway co-activation, and neurodevelopment. It serves as a Cyclin E/Cdk2 substrate that facilitates loading of replication factors Cdc6 and PCNA onto DNA to promote S-phase entry, and its depletion triggers p53/p21-dependent cell cycle arrest [PMID:19150984]. ANKRD17 amplifies RIG-I/MDA5–MAVS-mediated type I interferon responses and NOD1/NOD2-driven pro-inflammatory signaling through direct physical interactions mediated by its ankyrin repeat domain [PMID:22328336, PMID:23711367], and it functions as a YAP co-factor in Hippo pathway target gene expression [PMID:27877230]. Heterozygous loss-of-function variants cause Chopra–Amiel–Gordon syndrome, a neurodevelopmental disorder associated with synaptic and mitochondrial dysfunction [PMID:33909992, PMID:40604385].\",\n  \"teleology\": [\n    {\n      \"year\": 2009,\n      \"claim\": \"Identification of ANKRD17 as a Cyclin E/Cdk2 substrate that promotes DNA replication factor loading established its role as a cell cycle regulator required for the G1/S transition.\",\n      \"evidence\": \"TAP-tag purification, Co-IP, in vitro kinase assay, siRNA knockdown with cell cycle analysis in human cell lines\",\n      \"pmids\": [\"19150984\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"How Cdk2-mediated phosphorylation of ANKRD17 mechanistically regulates Cdc6/PCNA loading is unknown\",\n        \"No structural model of the ANKRD17–replication factor complexes exists\",\n        \"Whether ANKRD17's cell cycle function is linked to its ankyrin repeat domain is untested\"\n      ]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Genetic knockout in mice revealed that Ankrd17 is essential for embryonic vascular maturation, establishing an in vivo developmental requirement beyond cell culture proliferation.\",\n      \"evidence\": \"Ankrd17 homozygous knockout mice with histological and marker gene analysis\",\n      \"pmids\": [\"19619540\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"The cell-autonomous versus non-cell-autonomous basis of the vascular smooth muscle cell defect is unresolved\",\n        \"Why vSMC differentiation markers are paradoxically upregulated in mutants is unexplained\"\n      ]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Discovery that ANKRD17 physically interacts with RIG-I, MDA5, and MAVS and enhances RLR-mediated IFN-β induction revealed a second major function as a positive innate immune signaling scaffold.\",\n      \"evidence\": \"Reciprocal Co-IP, domain mapping of ankyrin repeats, gain- and loss-of-function with IRF-3/NF-κB/IFN-β reporter assays\",\n      \"pmids\": [\"22328336\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"The stoichiometry and dynamics of ANKRD17 within the RLR signalosome are undefined\",\n        \"Whether ANKRD17's immune and cell cycle roles are coordinately regulated is unknown\"\n      ]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Extending innate immune involvement, ANKRD17 was shown to bind NOD2 and support NOD1/NOD2-dependent pro-inflammatory responses, broadening its scope from RLR to NLR pathways.\",\n      \"evidence\": \"Co-IP with domain mapping, siRNA knockdown, overexpression, Shigella infection assay in myeloid and epithelial cells\",\n      \"pmids\": [\"23711367\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"The structural basis for ANKRD17 engaging both RLR and NLR components via different domains awaits detailed mapping\",\n        \"Single-lab finding not yet independently replicated\"\n      ]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Demonstrating that ANKRD17 (Mask2) is required for YAP-driven transcription of Hippo pathway target genes connected this scaffold to growth-regulatory signaling beyond the cell cycle machinery.\",\n      \"evidence\": \"siRNA knockdown and overexpression with cell proliferation, migration, and target gene expression assays in bladder cancer cells\",\n      \"pmids\": [\"27877230\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether ANKRD17 binds YAP directly or via intermediates is unresolved\",\n        \"The domain within ANKRD17 mediating Hippo co-activation is not mapped\"\n      ]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Influenza A virus PA-X protein was found to target ANKRD17's ankyrin repeats to suppress RLR-mediated immunity, providing evidence that pathogens actively antagonize ANKRD17's immune scaffold function.\",\n      \"evidence\": \"Co-IP, domain mapping, Ankrd17 knockout and overexpression with immune signaling readouts during IAV infection\",\n      \"pmids\": [\"33241870\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether other viral immune evasion proteins similarly target ANKRD17 is unexplored\",\n        \"Mechanism by which PA-X binding inhibits ANKRD17's scaffolding activity is undefined\"\n      ]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Human genetic studies established that heterozygous ANKRD17 loss-of-function causes Chopra–Amiel–Gordon syndrome, linking the protein to neurodevelopment and revealing haploinsufficiency as the disease mechanism.\",\n      \"evidence\": \"Multi-family cohort genetics, protein structural modeling of ankyrin repeat-disrupting missense variants, scRNA-seq of developing human brain\",\n      \"pmids\": [\"33909992\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No in vitro or cellular reconstitution of how specific variants disrupt ANKRD17 function\",\n        \"Which of ANKRD17's known molecular roles (cell cycle, immune, Hippo) is most critical in neural progenitors is unknown\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Mouse haploinsufficiency models recapitulated neurobehavioral deficits and revealed synaptic protein dysregulation and mitochondrial dysfunction, providing mechanistic correlates for the human neurodevelopmental phenotype.\",\n      \"evidence\": \"Ankrd17 heterozygous mice and knockdown models with behavioral testing (Morris water maze, social behavior), synaptic and mitochondrial protein profiling\",\n      \"pmids\": [\"40604385\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Direct molecular link between ANKRD17 and mitochondrial function has not been established\",\n        \"Whether synaptic defects are cell-autonomous is unresolved\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"ANKRD17 overexpression was shown to promote liver tumor metastasis by upregulating DDR1, placing ANKRD17 in a pro-metastatic signaling axis.\",\n      \"evidence\": \"Overexpression and knockdown with invasion/migration assays and DDR1 epistasis in mouse liver tumors and human liver cell lines\",\n      \"pmids\": [\"40458187\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether ANKRD17 regulates DDR1 transcriptionally or post-transcriptionally is not defined\",\n        \"Relevance to human liver cancer is based on cell lines; clinical validation is lacking\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ANKRD17 integrates its cell cycle, innate immune, Hippo pathway, and neurodevelopmental functions through its multi-domain architecture remains the central unresolved question.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No high-resolution structure of full-length ANKRD17 or its key domain complexes exists\",\n        \"The logic governing which function dominates in a given cellular context is unknown\",\n        \"Whether ANKRD17's essential SLiM identified by base editing links to its known interaction partners requires validation beyond preprint\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [0, 2, 3, 10]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 5]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [2, 3, 6]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [10]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [1, 7]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\n      \"CCNE1\",\n      \"CDK2\",\n      \"DDX58\",\n      \"IFIH1\",\n      \"MAVS\",\n      \"NOD2\",\n      \"YAP1\",\n      \"PCNA\"\n    ],\n    \"other_free_text\": []\n  }\n}\n```"}