TPOX Triallelic Genotype: An Interesting Pattern to Be Noted in Bone Marrow Transplantation Monitoring.

Abstract:

AIMS:TPOX triallelic genotypic pattern has been described in the setting of forensic and paternity testing but not in bone marrow transplantation (BMT) monitoring for graft engraftment. MATERIALS AND METHODS:A total of 50 cases have been studied using the AmpFLSTR(®) Identifiler™ polymerase chain reaction amplification kit as part of the workup of patients and donors before and after BMT at the American University of Beirut Medical Center. RESULTS:Of the 50 studied cases, 49 showed typical allelic patterns of the variable short tandem repeats detected by the assay; however, one single patient showed a biallelic TPOX genotype in the pre-BMT specimen but a triallelic pattern in the post-BMT sample. CONCLUSION:Triallelic patterns of TPOX should also be considered in the context of BMT monitoring testing where misinterpretation of the allelic pattern can lead to wrong unwanted conclusions related to the graft condition and proper quantification of donor DNA.

authors

Hoteit R,Khalek RA,Antar A,Mahfouz RA

doi

10.1089/gtmb.2014.0311

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

277-9

issue

5

eissn

1945-0265

issn

1945-0257

journal_volume

19

pub_type

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