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Biorepository Inventories

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Sample Types and Inventory Summary

The CIBMTR Biorepository contains approximately 3 million sample aliquots from more than 60,000 first allogeneic related and unrelated transplant recipient/donor (or cord blood) pairs with complete, validated clinical outcome data from CIBMTR's Research Database. The majority of the paired samples have complete high-resolution data available for HLA-A, B, C, DRB1/3/4/5, DQ and DP loci.

Sample Types

Samples in the CIBMTR Biorespository are stored as:

  • Whole blood
  • Cryopreserved whole blood
  • Plasma
  • Blood spotted on filter paper
  • Peripheral blood mononuclear cells (PBMC) viable and non-viable
  • B-Lymphoblastoid cell lines (B-LCL) viable and non-viable
  • Granulocytes
  • Serum
  • DNA
  • Whole genome amplified DNA

Available sample types vary by sample source and year of collection. Sample sources include: Adult and pediatric related/unrelated donors, cord blood and transplant recipients. Samples from recipients are drawn before the patient’s conditioning regimen begins. Prior to January 1, 2000, 100-day post-transplant samples were also drawn.

CIBMTR Biorepository as of May 2024  
Number of unrelated Donor/Recipient pairs 49,517
Number of unrelated Cord blood/Recipient pairs* 6,437
Number of unique unrelated Donor ID 89,582
Number of unique unrelated Recipient ID 87,432
Number of unique Cord ID 14,139
Number of unique related Donor ID 15,409
Number of unique related Recipient ID 16,052
Number of related Donor/Recipient Pairs 13,349

*Pair counts include incomplete multi-cord pairs with recipient and at least one cord sample available.

View a detailed summary of the available recipient and/or donor samples from first transplants, which includes information about the sample inventory by variable, including: age, gender, high-resolution typing, disease status, graft type, conditioning regimen, GVHD prophylaxis, and more: CIBMTR Biorepository Sample Inventory (PDF).

More information

For information about the availability of sample types or specific inventory queries, contact