Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Original Article
  • Published:

Normal Donors

Criteria for initiation and evaluation of minority donor programs and application to the example of donors of Turkish descent in Germany

Abstract

Minority donor programs aim to improve access to unrelated hematopoietic SCT for specific ethnic groups through directed donor recruitment. We have developed criteria for initiation and evaluation of such programs and applied them to the situation of donors of Turkish descent in Germany, as well as a program by DKMS German Bone Marrow Center that targets this group. Criteria for program initiation include the number of accessible minority donors, potential impact on the chances of finding matching donors, and general access to unrelated transplantation for patients of the targeted group. Success criteria comprise number and availability of recruited donors, the effect of these donors on the HLA phenotype distribution of a donor file, and the number of donations resulting from the program. More than 40 000 donors of Turkish descent have been recruited within the analyzed program to date. Recruited minority donors show more favorable demographic characteristics but lower availability rates than do German donors. Although HLA haplotype distributions of Turkish and German donors differ considerably, patients with common Turkish HLA phenotypes should benefit from the German donor pool even without a specific minority program. The analysis of donations from minority donors, however, shows specific benefits for patients with rare HLA phenotypes.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1
Figure 2
Figure 3
Figure 4

Similar content being viewed by others

References

  1. Beatty PG, Mori M, Milford E . Impact of racial genetic polymorphism on the probability of finding an HLA-matched donor. Transplantation 1995; 60: 778–783.

    Article  CAS  PubMed  Google Scholar 

  2. Oudshoorn M, Cornelissen JJ, Fibbe WE, de Graeff-Meeder ER, Lie JL, Schreuder GM et al. Problems and possible solutions in finding an unrelated bone marrow donor. Results of consecutive searches for 240 Dutch patients. Bone Marrow Transplant 1997; 20: 1011–1017.

    Article  CAS  PubMed  Google Scholar 

  3. Confer DL . The National Marrow Donor Program: meeting the needs of the medically underserved. Cancer 2001; 91: 274–278.

    Article  CAS  PubMed  Google Scholar 

  4. Kollman C, Abella E, Baitty RL, Beatty PG, Chakraborty R, Christiansen CL et al. Assessment of optimal size and composition of the US National Registry of hematopoietic stem cell donors. Transplantation 2004; 78: 89–95.

    Article  PubMed  Google Scholar 

  5. Switzer DE, Dew MA, Harrington DJ, Crowley-Matoka M, Myaskovsky L, Abress L et al. Ethnic differences in donation-related characteristics among potential hematopoietic stem cell donors. Transplantation 2005; 80: 890–896.

    Article  PubMed  Google Scholar 

  6. Tiercy JM, Nicoloso G, Passweg J, Schanz U, Seger R, Chalandon Y et al. The probability of identifying a 10/10 HLA allele-matched unrelated donor is highly predictable. Bone Marrow Transplant 2007; 40: 515–522.

    Article  CAS  PubMed  Google Scholar 

  7. World Marrow Donor Association. www.worldmarrow.org.

  8. Brunstein CG, Baker KS, Wagner JE . Expanding the role of umbilical cord blood transplantation. Br J Haematol 2007; 137: 20–35.

    Article  PubMed  Google Scholar 

  9. Kollman C, Howe CW, Anasetti C, Antin JH, Davies SM, Filipovich AH et al. Donor characteristics as risk factors in recipients after transplantation of bone marrow from unrelated donors: the effect of donor age. Blood 2001; 98: 2043–2051.

    Article  CAS  PubMed  Google Scholar 

  10. Schmidt AH, Biesinger L, Baier D, Harf P, Rutt C . Aging of registered stem cell donors: implications for donor recruitment. Bone Marrow Transplant 2008; 41: 605–612.

    Article  CAS  PubMed  Google Scholar 

  11. Cavalli-Sforza LL, Edwards AW . Phylogenetic analysis. Models and estimation procedures. Am J Hum Genet 1967; 19: 233–257.

    CAS  PubMed  PubMed Central  Google Scholar 

  12. Excoffier L, Laval G, Schneider S . Arlequin (version 3.0): an integrated software package for population genetics data analysis. Evol Bioinform Online 2005; 1: 47–50.

    Article  CAS  Google Scholar 

  13. Excoffier L, Slatkin M . Maximum-likelihood estimation of molecular haplotype frequencies in a diploid population. Mol Biol Evol 1995; 12: 921–927.

    CAS  PubMed  Google Scholar 

  14. Guo SW, Thompson EA . Performing the exact test of Hardy-Weinberg proportion for multiple alleles. Biometrics 1992; 48: 361–372.

    Article  CAS  PubMed  Google Scholar 

  15. Auswärtiges Amt. www.auswaertiges-amt.de.

  16. Kollman C, Weis T, Switzer GE, Halet M, Kitajima D, Hegland J et al. Non-HLA barriers to unrelated donor stem cell transplantation. Bone Marrow Transplant 2001; 27: 581–587.

    Article  CAS  PubMed  Google Scholar 

  17. Diler AS, Karaman V, Yesildag I, Yalman N . Describing the actual status of a Turkish bone marrow registry. Tissue Antigens 2008; 71: 377–378 (Abstract).

    Google Scholar 

  18. Bone Marrow Donors Worldwide. www.bmdw.org.

  19. Uyar FA, Dorak MT, Saruhan-Direskeneli G . Human leukocyte antigen-A, -B and -C alleles and human leukocyte antigen haplotypes in Turkey: relationship to other populations. Tissue Antigens 2004; 64: 180–187.

    Article  CAS  PubMed  Google Scholar 

  20. Beksac M, Dalva K . HLA-A, -B, -C, -DR haplotypes, linkage and frequencies observed in Ankara University, Turkey: a report from TRAN. Tissue Antigens 2008; 71: 373 (Abstract).

    Google Scholar 

  21. Gratwohl A, Baldomero H, Frauendorfer K, Urbano-Ispizua A, Niederwieser D . Results of the EBMT activity survey 2005 on haematopoietic stem cell transplantation: focus on increasing use of unrelated donors. Bone Marrow Transplant 2007; 39: 71–87.

    Article  CAS  PubMed  Google Scholar 

  22. Jahresbericht 2007. Deutsches Register für Stammzelltransplantationen. www.drst.de.

  23. Gratwohl A, Baldomero H, Frauendorfer K, Rocha V, Apperley J, Niederwieser D . Results of the EBMT activity survey 2006 on haematopoietic stem cell transplantation: focus on the use of cord blood products. Bone Marrow Transplant 2008; 41: 687–705.

    Article  CAS  PubMed  Google Scholar 

  24. Lee SJ, Klein J, Haagenson M, Baxter-Lowe LA, Confer DL, Eapen M et al. High-resolution donor-recipient HLA matching contributes to the success of unrelated donor marrow transplantation. Blood 2007; 110: 4576–4583.

    Article  CAS  PubMed  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to A H Schmidt.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Schmidt, A., Solloch, U., Baier, D. et al. Criteria for initiation and evaluation of minority donor programs and application to the example of donors of Turkish descent in Germany. Bone Marrow Transplant 44, 405–412 (2009). https://doi.org/10.1038/bmt.2009.55

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/bmt.2009.55

Keywords

Search

Quick links