DNA Quality Outweighs Bone Source
Background DNA burden was more strongly associated with sequencing profile completeness than bone source in unidentified human remains.
-
By
-
Andrea Surnit
-
May 19, 2026
-
Clinical Scorecard: DNA Quality Outweighs Bone Source
At a Glance
| Category | Detail |
|---|
| Condition | Forensic genome sequencing of skeletal remains |
| Key Mechanisms | Massively parallel sequencing and SNP profiling |
| Target Population | Unidentified human remains |
| Care Setting | Forensic laboratories |
Key Highlights
- 399 out of 500 samples met the DNA threshold for sequencing.
- Call rates ranged from 8% to 91%, with 95.7% achieving rates above 50%.
- Petrous bone samples had the lowest failure-to-progress rate at 6.5%.
- Standard quantitative DNA metrics guide workflow but cannot predict high-completeness profiles.
- 93.2% of sequenced samples achieved call rates of at least 60%.
Guideline-Based Recommendations
Diagnosis
- Use quantitative PCR to assess human DNA quantity in skeletal samples.
Management
- Prioritize petrous bone samples for sequencing due to lower failure rates.
Monitoring & Follow-up
- Evaluate call rates to determine suitability for genealogical databases.
Risks
- Current metrics may not capture all factors affecting sequencing success.
Patient & Prescribing Data
Individuals represented by unidentified skeletal remains.
Profiles with low call rates may still yield useful genetic information.
Clinical Best Practices
- Implement machine-learning models to improve prediction of sequencing outcomes.
- Consider environmental exposure and preservation status when evaluating samples.
- Use a combination of DNA metrics for a comprehensive assessment of sample viability.
Related Resources & Content
