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drawn."},"n_citations_to_primary_publication":null,"citation_to_reuse_ratio":null,"has_citable_accession":true,"n_verified_reuse":0,"n_reuse_examined":0,"n_independent_reuse":0,"n_nci_funded_reuse":0,"first_reuse_year":null,"latest_reuse_year":null,"years_since_release":null,"expected_reuse":null,"reuse_gap_index":null,"reuse_gap_percentile":null,"search_strategy_id":"epmc-index-v3","searched_at":"2026-09-20T18:07:48.788267Z","no_reuse_identified":true,"evidence":[{"method":"derived","source_url":"https://www.ebi.ac.uk/europepmc/webservices/rest/search","source_label":"Europe PMC section-scoped hit counts","retrieved_at":"2026-09-20T18:07:48.788267Z","snippet":null,"locator":"tokens: PDC000641, PDC000640; queries: METHODS:\"PDC000641\"; DATA_AVAILABILITY:\"PDC000641\"; ACCESSION_ID:\"PDC000641\"; REF:\"PDC000641\"","confidence":"high","reviewer":null,"reviewed_at":null,"note":"Index strategy epmc-index-v3. Every dataset is measured with the same single section field per tier, so the counts are comparable; the per-tier value is the largest across the dataset's own accessions, excluding any accession shared with other datasets in the corpus. No article was found under this accession, so there is no count to correct and no sample was drawn."}]},"underexplored":{"is_underexplored":false,"basis":["Not assessed: insufficient metadata to model expected reuse."],"index_value":null,"percentile":null,"comparator_set":"rgi-huber-v2","evidence":[]},"grants":[],"access_steps":[{"order":1,"action":"Open the study in the PDC portal","detail":"Proteomic data are released open; the portal's use guidelines still apply. This record spans 2 PDC studies; repeat for each.","url":"https://pdc.cancer.gov/pdc/study/PDC000641","requires":[],"est_time":"5 minutes","cli_snippet":null,"audience":"human","evidence":[{"method":"derived","source_url":"https://pdc.cancer.gov/pdc/study/PDC000641","source_label":"PDC access documentation","retrieved_at":"2026-09-21T12:30:59.434285Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]},{"order":2,"action":"Accept the data use guidelines and download","detail":"The portal asks for acknowledgement and citation, not a data access request.","url":"https://pdc.cancer.gov/pdc/data-use-guidelines","requires":[],"est_time":"minutes to hours, by study size","cli_snippet":null,"audience":"human","evidence":[{"method":"derived","source_url":"https://pdc.cancer.gov/pdc/data-use-guidelines","source_label":"PDC access documentation","retrieved_at":"2026-09-21T12:30:59.434287Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]},{"order":3,"action":"Resolve the study UUID, then fetch the file manifest","detail":"filesPerStudy keys on the study UUID, not on PDC000641: called with the pdc_study_id it returns the right number of rows with every column null. Resolve the UUID first and pass the terms acknowledgement.","url":"https://pdc.cancer.gov/data-dictionary/publicapi-documentation/","requires":[],"est_time":null,"cli_snippet":"python - <<'PY'\nimport requests\nAPI = \"https://proteomic.datacommons.cancer.gov/graphql\"\n\ndef gql(query, **variables):\n    r = requests.post(API, json={\"query\": query, \"variables\": variables}, timeout=180)\n    r.raise_for_status()\n    body = r.json()\n    if body.get(\"errors\"):\n        raise RuntimeError(body[\"errors\"][0][\"message\"])\n    return body[\"data\"]\n\nstudy = gql('query($id:String!){ study(pdc_study_id:$id acceptDUA:true){ study_id } }',\n            id=\"PDC000641\")[\"study\"][0]\nfiles = gql('query($sid:String!){ filesPerStudy(study_id:$sid acceptDUA:true)'\n            '{ file_id file_name file_size } }', sid=study[\"study_id\"])[\"filesPerStudy\"]\nprint(len(files), \"files\")\nPY","audience":"agent","evidence":[{"method":"derived","source_url":"https://pdc.cancer.gov/data-dictionary/publicapi-documentation/","source_label":"PDC access documentation","retrieved_at":"2026-09-21T12:30:59.434289Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]}],"analysis_examples":[],"agent_package":{"json_url":"/data/datasets/pdc-cptac-kf-ccdi-pediatric-t-all-study.json","jsonld_url":"/data/jsonld/pdc-cptac-kf-ccdi-pediatric-t-all-study.jsonld","croissant_url":"/data/croissant/pdc-cptac-kf-ccdi-pediatric-t-all-study.json","instructions_url":"/data/agent/pdc-cptac-kf-ccdi-pediatric-t-all-study.md","bundle_url":null,"mcp_resource_uri":null},"related_dataset_ids":[],"related_underexplored_ids":[],"review":{"status":"machine_only","reviewer":null,"reviewer_affiliation":null,"reviewed_at":null,"sections_reviewed":[],"open_questions":[],"notes":null},"verification":{"last_verified_at":null,"link_checks":[],"n_links_ok":0,"n_links_broken":0,"upstream_version_seen":null,"upstream_version_changed":false,"upstream_counts_seen":{},"upstream_drift":{},"notes":[]},"is_showcase":false,"completeness_score":25.0,"tags":["pdc","proteogenomics"],"search_text":null}