Evidence: historical governance case. Imported from the supplied 65-Case Master Edition, dated September 19, 2026. Source links and classifications are retained as an attributed case account; import is not an independent source review.

Case at a glance

Case number
020
Date / range
1980s–2000s
Sector
Consent, ownership, and biospecimens
Genetic asset
Blood specimens and derived research data
Security principle
Specimen Mobility and Community Control

Event summary

The Nuu-chah-nulth case shows how samples collected for a specific health study can move between institutions and support additional research beyond the community's original understanding, making custody maps and community governance essential security controls.

Source: igb.illinois.edu — Nuu-Chah-Nulth Blood-Sample Return source 1.

Source: gida-global.org — Nuu-Chah-Nulth Blood-Sample Return source 2.

The case in context

The Nuu-chah-nulth case follows specimens beyond the study for which people understood they were contributing them. Movement between institutions can make it difficult for a community to see which material still exists, who controls it, and what research has been performed.

The security lesson concerns that loss of visibility and control. A complete account should not assume that every subsequent use had the same authorization history. Transfer records, purpose restrictions, and return or destruction agreements need to follow the material so that the collection's original context does not disappear when an investigator moves.

Acquisition and processing

specific-purpose collection → researcher custody → institutional movement → secondary analyses → loss of community visibility → return and destruction

The sequence of events

  1. specific-purpose collection
  2. researcher custody
  3. institutional movement
  4. secondary analyses
  5. loss of community visibility
  6. return and destruction

What became inferable or exposed

Blood specimens and derived research data

The Nuu-chah-nulth case shows how samples collected for a specific health study can move between institutions and support additional research beyond the community's original understanding, making custody maps and community governance essential security controls.

Security dimensions

Confidentiality

The confidentiality question concerns blood specimens and derived research data. Exposure and further inference must be distinguished from the fact of collection or availability.

Integrity

The integrity question is whether the described material, permissions, processing, or interpretation can be relied upon. Specimen Mobility and Community Control identifies the particular boundary examined here.

Availability

Access and continuity are assessed for the described event; potential effects are not presented as confirmed outages or losses.

Provenance

The relevant chain follows blood specimens and derived research data through the stages shown below. Missing public detail is not proof that internal records did not exist.

GeneticSecurity.org analysis

Genetic Exposure Radius

Not assessed

No single level is assigned where the supplied dossier gives a range, conditional outcome, or broad institutional consequence. The affected parties and proposed assessment are shown separately.

Confidence: not assigned. Classification: GeneticSecurity.org analysis.

Genetic Persistence Risk

Not assessed

Persistence depends on the specific biological material or information retained. A potential effect is not treated as an observed genomic disclosure.

Confidence: not assigned. Classification: GeneticSecurity.org analysis.

Genetic Provenance Integrity

Not assessed

A numeric provenance level is not inferred from the existence of a source or court record. It requires evidence of the relevant custody and processing controls.

Confidence: not assigned. Classification: GeneticSecurity.org analysis.

Proposed classification and its limits

Suggested GER: GER-4. Suggested GPR: GPR-5. Suggested GPI: GPI-1/2 if a complete custody/use history cannot be reconstructed.

These are proposed classifications from the supplied case dossier. Conditional scores describe an assumed exposure; they are not evidence that it occurred. A single numeric value is left unassigned when the asset or outcome is not sufficiently bounded.

What this case does not prove

The account does not establish the authorization history of every secondary study. Its focus is unclear purpose, movement, and accountability.

Mitigations and lessons

  • Community-level agreements
  • Specimen passports
  • Use-specific approvals
  • No-transfer clauses
  • Benefit sharing
  • Indigenous data sovereignty principles
  • Withdrawal workflows
  • Verifiable destruction

Primary sources

Secondary sources

No additional source listed. See the evidence notes for limitations.

Policy and standards

Genetic Security Policy and Standards

Review and correction history

Source edition: September 19, 2026. Imported case account; no substantive corrections recorded.

Correction policy and log

Cite this case

GS-CASE-020. Nuu-chah-nulth: When Blood Collected for One Study Traveled Further. GeneticSecurity.org. https://geneticsecurity.org/cases/020-nuu-chah-nulth-blood-sample-return/