NHLBI Umbilical Cord Blood Unit Collection (CBB)

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Accession Number

Study Type
Epidemiology Study

Collection Type
Open BioLINCC Study See bottom of this webpage for request information

Study Period

NHLBI Division

Related Studies

The Cord Blood Units (CBU's) in this collection are considered anonymized. That is, the link to the CBU donor has been destroyed and only limited data are available to investigators (see Data Dictionary). Requestors of these CBU's must follow their institutional guidelines regarding the use of anonymized biospecimens. If IRB approval/waiver is not consistent with the requestor's institutional guidelines for the use of anonymized specimens, other institutional documentation or policy statements should be substituted to document research compliance.


Commercial Use Specimen Restrictions Yes

Non-Genetic Use Specimen Restrictions Based On Area Of Use Yes

Genetic Use Of Specimens Allowed? Yes

Genetic Use Area Of Research Restrictions Yes

Specific Consent Restrictions
Restrictions prohibit the use of biospecimens for cell line production. A subset of biospecimens are available for infectious disease testing. Biospecimens are not available for commercial use.


The NHLBI Umbilical Cord Blood Unit Collection parent study is the Cord Blood Transplantation Study Cord Blood Banking (COBLT CBB) program. The objective of the COBLT CBB was to build an ethnically diverse unrelated cord blood bank and to develop standard operating procedures for umbilical cord blood donor recruitment, selection and banking.


Cord blood is an alternative source of hematopoietic stem cells that has been shown to be efficacious in hematopoietic stem cell transplantation of both adults and pediatrics. Compared to other stem cell sources, cord blood is easier and safer to procure, has no donor attrition and can be stored and made readily available. Cord blood is rich in hematopoietic progenitor cells and antigen-inexperienced T cells. Transplantation of cord blood units are associated with reduced viral transmission, less acute and chronic graft-versus-host-disease than other stem cell sources. However, transplantation of cord blood also has been associated with delayed neutrophil and platelet engraftment, prolonged immune reconstitution, uncertain graft-versus-tumor activity, and cell doses from single cord blood units are a limiting factor for larger recipients.


The CBU were collected under standard operating procedures described in detail elsewhere (1) (https://web.emmes.com/study/cord/).


The CBU were collected under standard operating procedures described in detail elsewhere (1) (https://web.emmes.com/study/cord/).

Specimen Notes

All COBLT CBUs are red cell depleted, volume reduced and cryopreserved with DMSO/Dextran in 25 ml bags.


J. K. Fraser et al., J Hematother 7, 521 (Dec, 1998).

M. S. Cairo et al., Transfusion 45, 856 (Jun, 2005).

J. Kurtzberg et al., Transfusion 45, 842 (Jun, 2005).

Additional Details

Please note that biospecimen availability is subject to review by the NHLBI, BioLINCC, and the NHLBI Biorepository. Certain biospecimens may not be made available for your request. Section 3 of the BioLINCC handbook describes the components of the review process

Visits (Vials):


Subjects only have specimens from one time point.

  Cord Blood Aliquot Cord Blood Unit Total
Caucasian 1,977 185 2,162
Black/African 905 392 1,297
Asian/Pacific Islander 1,168 326 1,494
Hispanic 2,360 750 3,110
Other/Mixed 1,102 279 1,381
Visits (Subjects):


Subjects only have specimens from one time point.

  Cord Blood Aliquot
Total number of subjects Average volume (ml) per subject
Caucasian 1,154 1.74
Black/African 466 1.96
Asian/Pacific Islander 596 1.99
Hispanic 1,425 1.68
Other/Mixed 571 1.96
  Cord Blood Unit
Total number of subjects Average bags per subject
Caucasian 185 1.00
Black/African 392 1.00
Asian/Pacific Islander 326 1.00
Hispanic 750 1.00
Other/Mixed 279 1.00

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Resources Available

Specimens Only

Materials Available

Study Documents

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