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TCGA-LUAD v0.5 — HM450 / hg19 patient release

The TCGA-LUAD component of the v0.5 Posture B coordinated release set. Built on the Illumina HumanMethylation450 array under the hg19 reference assembly from the TCGA-LUAD patient tissue cohort (n=473 tumor / n=32 normal). Hypothesis generation only — no prospective wet-lab validation.

Release tag: atlas-tcga-luad-v0.5.0-wg-sigmoid Platform: HM450 / hg19 Cohort: patient tissue (n=473 / n=32) Status: Hypothesis generation only
Scope
Every candidate on this page is a hypothesis, not a target. The release ships scored candidate parquets + manifest + validation panel for downstream wet-lab pre-selection; it has not been validated prospectively. Selecting a row from the released candidates for therapeutic application requires running the full freeze-and-validate pipeline documented at the framework repository.

v0.5 release tag + manifest

Manifest sha256
a277af86a5b9…
Reference assembly
hg19 (GRCh37)
Probe array
Illumina HM450 (GPL13534)
Catalog size
19,787,820 sites
Cohort
TCGA-LUAD patient tissue

Reviewer-access caveat: the sigaihealth/atlas repository is currently restricted to organization members; unauthenticated requests return HTTP 404. Public-read access is a held GigaScience submission gate. The release URL above resolves once the repo flips to public.

Tier breakdown (v0.5)

Tier classifications follow the v0.5 schema (Tier A–E). Tier A is reserved for the future v1 layer set (guide feasibility + off-target methylation + normal-tissue protection); v0.5 populates Tier B–E from the layers it currently audits.

Tiercandidatesshape
Areserved (pending v1 guide-feasibility layer)
B21,318tissue-driven; EXACT evidence share 11.63%
C2,716,926trust-floor candidates
D4,683,351decoy archetypes
E12,366,225no-evidence remainder
total19,787,820matches HM450 catalog size

panel_layer normal-tissue coverage

83.63%
panel_layer.status: available
covered: 16,549,327 / 19,787,820 HM450 catalog sites
uncovered: 3,238,493 sites
envelope: 10 tissues × 687 samples (broad-normal v0.2 panel)
panel sha256: 773a9369…d3d7cb (shared across the three TCGA HM450 releases)

Validation panel composition

The TCGA-LUAD v0.5 validation panel is 18 rows × 3 selection classes (6 rows per class), uniform with the COAD and LIHC patient-cohort panels.

selection classrows
always_unmethylated_decoy6
target_side_methylated_negative6
feature_matched_control6
total18

The full per-row schema (candidate coordinates, PAM family, score, off-target detail, feature class) lives in the release artifact atlas_validation_panel_lung.tsv under the release tag above.

Cross-cancer context

LUAD's Tier B candidate set shares a 3-way intersection with COAD and LIHC of 6,441 candidates / 1,378 probe loci / 1,635 nearest-gene symbols — same loci, different signal strength across cancers. Pairwise Tier B shared counts: COAD ∩ LUAD = 10,450; LUAD ∩ LIHC = 10,796.

The BRCA EPIC-v2 / hg38 release does not intersect with this HM450 / hg19 release at the candidate-id level (different probe space + different reference assembly). For BRCA cross-comparison, work at the nearest-gene-symbol level and treat the cell-line cohort separately from the TCGA patient-cohort releases.

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