object_id: "SC:v1.0.0-database-resource:NAGLU:1.5-DRAFT"
card_schema: "nmd-vcell-study-card/1.5"
card_version: "1.5"
resource_release: "v1.0.0-database-resource"
evidence_freeze: "2026-07-25"
interface_build: "EA-20260729-15"
gene: "NAGLU"
card_type: "risk_context_review"
current_action_code: "risk_review"
current_action: "Risk/context review"
lifecycle:
  state: "DRAFT"
  revision: 1
  immutable: false
  registered_at: null
  supersedes: null
  immutable_after_registration: true
decision_blocking_gap:
  code: "GAP-08"
  label: "Safety and dependency context blocks escalation"
highest_missing_evidence_layer: "L4_dmd_functional_validation"
secondary_gaps:
  - "GAP-02 independent muscle-context perturbation"
  - "GAP-03 DMD-relevant functional validation"
  - "GAP-07 independent replication"
frozen_evidence_snapshot:
  snapshot_schema: "nmd-vcell-study-card-frozen-evidence-snapshot/1.0"
  source_record: "gene/NAGLU"
  highest_supported_level: "L2_observed_same_context_perturbation"
  highest_assessed_level: "L3a_external_context_screen"
  observed_hepg2_perturbation:
    assessment_status: "assessed"
    support_status: "supported"
    observed_cells: 88
  external_context_screen:
    assessment_status: "assessed"
    support_status: "context_evidence_present"
    hit: false
    effect_size: 0.061132
    fdr: 0.685034
    interpretation: "assessed_no_current_hit"
  dmd_prior:
    integrated_prior_direction: "up"
    source_direction_state: "conflicted"
    source_agreement_proportion: 0.75
    agreeing_sources: 3
    assessed_sources: 4
    coverage_state: "4_of_4_sources"
    uncertainty_state: "direction_conflict_retained"
  context_metrics:
    skeletal_muscle_median_tpm: 8.66362
    depmap_median_gene_effect: -0.3062173666837822
    moderate_dependency_flag: true
  visual_boundary: "Descriptive frozen evidence snapshot only; no score, rank, cluster, prediction claim or intervention recommendation is generated."
unresolved_question: "Does perturbing NAGLU have a context-dependent dependency or toxicity profile that blocks escalation?"
biological_context: "Matched disease-relevant and non-disease human myogenic contexts plus a tissue-breadth/dependency audit."
perturbation_modality: "Dose/time perturbation series only after expression feasibility; include at least two reagents where feasible."
comparator_and_controls:
  - "Non-targeting and mock controls."
  - "Positive toxicity control."
  - "Matched healthy/DMD or isogenic context."
  - "Dose and time vehicle controls."
primary_endpoint: "Predeclared viability or essentiality endpoint across dose and time."
secondary_endpoints:
  - "Target engagement."
  - "Functional muscle phenotype."
  - "Off-target and tissue-breadth context."
primary_estimand: "Context-by-dose interaction for the primary safety endpoint."
state_transition_design:
  scientific_object: "perturbation × cell state × disease context × time × phenotype"
  mechanism_hypothesis: "Required before registration: state the proposed early molecular mediator, the expected cell-state transition and the downstream functional consequence."
  cell_context_fields:
    disease_background: "Required before registration: healthy, DMD or isogenic corrected."
    myogenic_state: "Required before registration: proliferating myoblast, early differentiation, fusion or maturing myotube."
    donor_or_isogenic_pair: "Required before registration; preserve donor-specific estimates."
  timepoint_plan:
    - "[object Object]"
    - "[object Object]"
    - "[object Object]"
  endpoint_domains:
    target_engagement:
      - "mRNA"
      - "protein where validated"
      - "perturbation efficiency"
    functional:
      - "fusion"
      - "morphology"
      - "membrane integrity"
      - "calcium"
      - "contraction"
    safety:
      - "viability"
      - "proliferation"
      - "differentiation blockade"
      - "global stress"
    replication:
      - "reagent"
      - "donor or isogenic pair"
      - "future batch"
  cell_cell_consequence:
    current_status: "not_assessed"
    future_levels:
      - "conditioned medium"
      - "two-cell co-culture"
      - "three-dimensional muscle model"
      - "spatial perturbation model"
  response_archetype:
    current_status: "not_assessed"
    allowed_values:
      - "robust_responder"
      - "dmd_specific_responder"
      - "donor_variable"
      - "state_specific"
      - "toxic_responder"
      - "null_with_equivalence_margin"
      - "discordant"
      - "qc_failure"
      - "inconclusive"
perturbation_direction_rationale:
  selected_hypothesis: "unresolved_requires_registration"
  allowed_hypotheses:
    - "activation"
    - "inhibition"
    - "bidirectional_exploration"
    - "direction_not_identifiable"
  required_justification: "State whether the disease-associated direction is hypothesized as causal, compensatory or accompanying, and preserve the opposite-direction alternative. DMD direction and counteralignment never choose an intervention automatically."
minimally_important_effect: "Required before registration; derive from assay biology or a justified pilot and store the numeric value with units."
negligible_effect_margin: "Required before interpreting a null result; store a symmetric or asymmetric numeric margin with units."
suggested_sample_size_range: "3–6 independent biological replicates per context for a pilot dose/time grid; final n requires interaction-effect power analysis."
randomisation_unit: "Independent culture well/biological replicate."
blocking_factors:
  - "Donor/isogenic pair."
  - "Plate."
  - "Dose/time batch."
  - "Reagent."
statistical_model: "Mixed-effects dose-response model with context interaction and blocked reagent estimates."
multiple_testing_family: "Primary safety endpoint across frozen doses/times; functional endpoints are secondary."
missing_data_rule: "Define exclusions before unblinding; report all missing units and reasons; do not single-impute primary outcomes without a prespecified sensitivity analysis."
assay_qc_thresholds:
  - "Numeric viability floor."
  - "Numeric target-engagement floor."
  - "Predeclared off-target exclusion criteria."
guide_concordance_rule: "Escalation requires directionally compatible safety estimates from two reagents."
donor_replication_rule: "A favourable window must not be attributable to one donor/context."
estimated_time_band: "6–12 weeks after model readiness; planning estimate only."
estimated_cost_band: "Institution- and assay-dependent; obtain a local itemised quote before registration."
preregistration_status: "draft_requires_direction_rationale_numeric_effect_margin_sample_size_and_qc_thresholds"
inferential_unit: "Independent biological replicate or independently generated perturbation unit; cells within one aggregate are not inferential replicates."
evidence_import_requirements: []
planning_fields_not_applicable: []
stop_rules:
  - "Stop or classify as infeasible if a required numeric QC threshold fails."
  - "Do not interpret a nonsignificant result as no material effect without a negligible-effect interval."
  - "Do not change canonical candidate status automatically; require governed review."
escalation_rule: "Escalate from L2 to L3b only after independent context-matched perturbation replication; L4 requires replicated DMD-relevant muscle evidence."
evidence_transition: "Current evidence state → predeclared independent test → governed evidence-level review."
data_release_plan: "Release the frozen card, protocol identifiers, analysis code, complete denominators and results irrespective of direction; never overwrite the registered card."
boundary: "This Study Card is an evidence-gated design scaffold, not a protocol, power calculation, safety claim, prediction or therapeutic recommendation."
stable_url: "study-card/NAGLU"
exports:
  json: "api/v1.1/study-cards/NAGLU.json"
  yaml: "downloads/study-cards/NAGLU.yaml"
  tsv: "downloads/study-cards/NAGLU.tsv"
