PT  - JOURNAL ARTICLE
AU  - Ali M. Hellani
AU  - Siham M. Akoum
AU  - Elias S. Fadel
AU  - Hisham M. Yousef
AU  - Khaled K. Abu-Amero
TI  - Successful pregnancies after combined human leukocyte antigen direct genotyping and preimplantation genetic diagnosis utilizing multiple displacement amplification
DP  - 2012 Oct 01
TA  - Saudi Medical Journal
PG  - 1059--1064
VI  - 33
IP  - 10
4099  - http://smj.org.sa/content/33/10/1059.short
4100  - http://smj.org.sa/content/33/10/1059.full
SO  - Saudi Med J2012 Oct 01; 33
AB  - OBJECTIVE: To devise a new and simple technique to help select normal embryos that are human leukocyte antigen (HLA) matched to their affected siblings for diseases, such as beta-thalassemia or sickle cell anemia, which are common in this part of the world.METHODS: This study was conducted between March 2008 and April 2011 at the preimplantation Genetic Diagnosis Laboratory, Saad Specialist Hospital, Al-Khobar, Kingdom of Saudi Arabia. Embryos were obtained after 7 in vitro fertilization preimplantation genetic diagnosis (IVF-PGD) cycles. Single cells were biopsied, and extracted DNA was amplified by the multiple displacement amplification (MDA) technique. Amplified DNA was then tested for mutations in the beta-globin gene, and directly HLA typed using a sequence specific primer technique.RESULTS: We report 7 families that underwent 7 PGD cycles with HLA typing and direct HLA loci-typing using an HLA conventional commercial kit. Two patients had PGD and HLA typing for class I and II, while the other 5 had class II. The PGD cycles resulted in 3 pregnancies out of 5 patients who had HLA matched and normal embryos. One family had a successful hematopoietic stem cell transplant.CONCLUSION: This report demonstrates the first clinical application of PGD coupled with direct HLA loci-typing of DNA amplified by MDA from a single cell.