Detecting Mutations Linked with Hemophilia A and B in Duhok Province
DOI:
https://doi.org/10.15218/crewh.2024.08Keywords:
FVIII Intron 22, FVIII Intron 1, FIX genes, SequencingAbstract
Background & Objectives: This study aimed to identify mutations associated with hemophilia A and B in patients from Duhok Province, Iraq. The study sought to characterize genetic mutations in FVIII and FIX genes and their impact on disease manifestation.
Materials and Methods: Seventy-five hemophiliac patients (62 with hemophilia A, 13 with hemophilia B) and 75 control subjects were included. DNA extraction, PCR amplification of specific gene regions, and sequencing were performed.
Results: Several novel mutations were identified, particularly in intron 22 of the FVIII gene and exon 4 of the FIX gene. No mutations were found in FVIII intron 1. Amino acid changes resulting from these mutations were observed.
Conclusion: The research reveals novel mutations associated with hemophilia A and B in the Duhok region, contributing to a better understanding of the genetic basis of these conditions.
References
P. H. Bolton-Maggs and K. J. Pasi, "Haemophilias A and B," Lancet, vol. 361, pp. 1801-1809, 2003.
R. Kruse-Jarres et al., "Acquired hemophilia A: Updated review of evidence and treatment guidance," Am J Hematol, vol. 92, pp. 695-705, 2017.
H. Kizilocak and G. Young, "Diagnosis and treatment of hemophilia," Clin Adv Hematol Oncol, vol. 17, pp. 344-351, 2019.
J. Sambrook and D. W. Russell, "Molecular Cloning alabrotory manual," Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 2001.
I. H. Aziz and A. H. Al-Musawi, "Investigation of the inherited mutations related to inversion process of intron 22 in a sample of Iraqi patients with Hemophilia A," Pakistan Journal of Biotechnology, vol. 14, pp. 817-821, 2017.
A. Sattar et al., "Screening of Intron 1 Inversion of the Factor VIII Gene in 130 Patients with Severe Hemophilia A from a Pakistani Cohort," Turk J Haematol, vol. 34, pp. 278-279, 2017.
R. D. Bagnall et al., "Recurrent inversion breaking intron 1 of the factor VIII gene is a frequent cause of severe hemophilia A," Blood, vol. 99, pp. 168-174, 2002.
J. M. Mantilla-Capacho et al., "Frequency of intron 1 and 22 inversions of Factor VIII gene in Mexican patients with severe hemophilia A," Am J Hematol, vol. 82, pp. 283-287, 2007.
F. Allaf et al., "Mutation Screening of the Factor VIII Gene in Hemophilia A in Saudi Arabia: Two Novel Mutations and Genotype-Phenotype Correlation," Journal of Molecular and Genetic Medicine, vol. 10, 2016.
A. M. Cumming, "The factor VIII gene intron 1 inversion mutation: prevalence in severe hemophilia A patients in the UK," J Thromb Haemost, vol. 2, pp. 205-206, 2004.
R. Salviato et al., "Factor VIII gene intron 1 inversion: lower than expected prevalence in Italian haemophiliac severe patients," Haemophilia, vol. 10, pp. 194-196, 2004.
N. J. Faridi, P. Kumar, and N. Husain, "Prevalence of intron 1 inversion of cases with hemophilia A in North Indian population," Clin Appl Thromb Hemost, vol. 18, pp. 599-603, 2012.
W. Iqbal, M. Raza, and M. S. Khan, "Intron 22 Inversions in Severe Hemophiliacs," American Journal of Medicine and Medical Sciences, vol. 3, pp. 190-196, 2013.
R. Ahmed et al., "Mutation reports: intron 1 and 22 inversions in Indian haemophilics," Ann Hematol, vol. 82, pp. 546-547, 2003.
S. Reitter et al., "Spectrum of causative mutations in patients with haemophilia A in Austria," Thromb Haemost, vol. 104, pp. 78-85, 2010.
A. Awidi et al., "Study of mutations in Jordanian patients with haemophilia A: identification of five novel mutations," Haemophilia, vol. 16, pp. 136-142, 2010.
J. Naylor et al., "Characteristic mRNA abnormality found in half the patients with severe haemophilia A is due to large DNA inversions," Hum Mol Genet, vol. 2, pp. 1773-1778, 1993.
K. K. Abu-Amero et al., "Spectrum of factor VIII mutations in Arab patients with severe haemophilia A," Haemophilia, vol. 14, pp. 484-488, 2008.
C. Djambas Khayat et al., "Molecular analysis of F8 in Lebanese haemophilia A patients: novel mutations and phenotype-genotype correlation," Haemophilia, vol. 14, pp. 709-716, 2008.
V. Akkarapatumwong et al., "Frameshift mutations with severe and moderate clinical phenotypes in Thai hemophilia A patients," Hum Mutat, vol. 16, pp. 530-531, 2000.
L. Salazar-Sánchez et al., "Molecular analysis of FVIII gene in severe HA patients of Costa Rica," Hamostaseologie, vol. 30, pp. 150-152, 2010.
Z. Xia et al., "An intronic mutation c.6430-3C>G in the F8 gene causes splicing efficiency and premature termination in hemophilia A," Blood Coagul Fibrinolysis, vol. 29, pp. 381-386, 2018.
S. C. Nair et al., "Tests of global haemostasis and their applications in bleeding disorders," Haemophilia, vol. 16, pp. 85-92, 2010.
A. C. Goodeve, "Hemophilia B: molecular pathogenesis and mutation analysis," J Thromb Haemost, vol. 13, pp. 1184-1195, 2015.
K. R. Viel et al., "Inhibitors of factor VIII in black patients with hemophilia," N Engl J Med, vol. 360, pp. 1618-1627, 2009.
T. Li et al., "The CDC Hemophilia B mutation project mutation list: a new online resource," Mol Genet Genomic Med, vol. 1, pp. 238-245, 2013.
P. Balraj et al., "Factor IX mutations in haemophilia B patients in Malaysia: a preliminary study," Malays J Pathol, vol. 34, pp. 67-69, 2012.
K. Y. Lam et al., "A Novel Missense Mutation of F9 Gene in Hemophilia B Patients," J Blood Disord Transfus, vol. 8, p. 383, 2017.
Z. Abla et al., "Mutations Causing Haemophilia B: Identification of a Rare Mutation in the EGF1 Domain of Coagulation Factor IX in Patients with
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