PMID- 28670940 OWN - NLM STAT- MEDLINE DCOM- 20171219 LR - 20171219 IS - 1532-432X (Electronic) IS - 0363-0269 (Linking) VI - 41 IP - 2 DP - 2017 Mar TI - Rare beta-Globin Gene Mutations in Pakistan. PG - 100-103 LID - 10.1080/03630269.2017.1339612 [doi] AB - The aim of this study was to analyze the rare beta-thalassemia (beta-thal) mutations in the Pakistani population. A total of 8716 unrelated Pakistani individuals having children with transfusion-dependent thalassemia were investigated by amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) for the previously reported common and rare beta-thal mutations. Genomic sequencing of the beta-globin gene and its immediate 5' and 3' flanking regions was done where no known mutation was found. Out of the 8716 individuals studied, 88 (1.0%) were not characterized by ARMS-PCR. Genomic sequencing revealed that 67 (0.82%) individuals had 19 different beta-thal mutations including one novel mutation (HBB: c.136delT). The remaining 21 (0.26%) individuals did not show any mutation on the beta-globin gene and its immediate flanking regions. The characterized alleles included seven (0.09%) in the 5' untranslated region (5'UTR), 29 (0.35%) in the coding regions, and 31 (0.38%) in the splice junction regions. HBB: c.92+1G>A and HBB: c.113G>A were the most frequently seen rare mutations. The spectrum of beta-thal mutations in the Pakistani population is very diverse. In addition to the already reported mutations, another 19 different types of mutations were found. Interestingly, 21 individuals who had children with transfusion-dependent thalassemia and one known beta-thal mutation, did not show any mutation on the beta-globin gene. HBB: c.92+1G>A and HBB: c.113G>A are the most frequently seen rare mutations in Pakistan. FAU - Hussain, Ahsan AU - Hussain A AD - a Department of Haematology , Armed Forces Institute of Pathology , Rawalpindi , Pakistan. FAU - Ahmed, Suhaib AU - Ahmed S AD - b Department of Pathology , Riphah International University , Islamabad , Pakistan. FAU - Ali, Nadir AU - Ali N AD - a Department of Haematology , Armed Forces Institute of Pathology , Rawalpindi , Pakistan. FAU - S Mailk, Hamid AU - S Mailk H AD - a Department of Haematology , Armed Forces Institute of Pathology , Rawalpindi , Pakistan. FAU - Anees, Mariam AU - Anees M AD - c Department of Biochemistry , Quaid-i-Azam University Islamabad , Pakistan. FAU - Chuahdry, Altaf H AU - Chuahdry AH AD - a Department of Haematology , Armed Forces Institute of Pathology , Rawalpindi , Pakistan. FAU - Ahmed, Parvez AU - Ahmed P AD - a Department of Haematology , Armed Forces Institute of Pathology , Rawalpindi , Pakistan. LA - eng PT - Journal Article DEP - 20170703 PL - England TA - Hemoglobin JT - Hemoglobin JID - 7705865 RN - 0 (3' Untranslated Regions) RN - 0 (5' Untranslated Regions) RN - 0 (beta-Globins) SB - IM MH - *3' Untranslated Regions MH - *5' Untranslated Regions MH - Female MH - Humans MH - Male MH - *Mutation MH - Pakistan MH - Thalassemia/*genetics MH - beta-Globins/*genetics OTO - NOTNLM OT - Pakistan OT - rare mutations OT - beta-Thalassemia (beta-thal) EDAT- 2017/07/04 06:00 MHDA- 2017/12/20 06:00 CRDT- 2017/07/04 06:00 PHST- 2017/07/04 06:00 [pubmed] PHST- 2017/12/20 06:00 [medline] PHST- 2017/07/04 06:00 [entrez] AID - 10.1080/03630269.2017.1339612 [doi] PST - ppublish SO - Hemoglobin. 2017 Mar;41(2):100-103. doi: 10.1080/03630269.2017.1339612. Epub 2017 Jul 3.