Factor IX mutations in Haemophilia B patients in Malaysia: apreliminary study
- Author:
Pauline Balraj
;
Munirah Ahmad
;
Alan Soo Beng Khoo
;
Yasmin Ayob
- Publication Type:Letter
- Keywords:
factor IX, Hemophilia B, mutation, clotting factor
- From:The Malaysian Journal of Pathology
2012;34(1):67-69
- CountryMalaysia
- Language:English
-
Abstract:
Haemophilia B is caused by coagulation defects in the factor IX gene located in Xq27.1 on the X
chromosome. Identifi cation of mutations contributing to defective factor IX may be advantageous
for precise carrier and prenatal diagnosis. We studied 16 patients from 11 families, consisting
of 8 patients of the Malay ethnic group, of which 6 were siblings. Factor IX mutations have not
been previously reported in the Malay ethnic group. The functional region of the factor IX gene
was sequenced and mutations were identifi ed in either the exon or intronic regions in 15 of the
patients. One novel mutation, 6660_6664delTTCTT was identifi ed in siblings with moderate form
of haemophilia B. Mutations identifi ed in our patients when linked with disease severity were
similar to fi ndings in other populations. In summary, this preliminary data will be used to build a
Malaysian mutation database which would facilitate genetic counseling.
- Full text:W020151218428580283601.pdf
