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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Greaves, Ronda / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter

IMPACT FACTOR 2018: 3.638

CiteScore 2018: 2.44

SCImago Journal Rank (SJR) 2018: 1.191
Source Normalized Impact per Paper (SNIP) 2018: 1.205

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Volume 41, Issue 4


Allele Frequencies for Glutathione S-Transferase and N-Acetyltransferase 2 Differ in African Population Groups and May Be Associated With Oesophageal Cancer or Tuberculosis Incidence

Craig H. Adams / Cedric J. Werely / Thomas C. Victor / Eileen G. Hoal / Gawie Rossouw / Paul D. van Helden
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/CCLM.2003.090


Glutathione S-transferase (GST) and arylamine N-acetyltransferase 2 (NAT2) metabolise many environmental and chemotherapeutic agents, which influence susceptibility to disease. Polymorphisms in these enzymes result in different host phenotypes and contribute to different disease profiles or responses to toxic or chemotherapeutic agents, depending on their frequency in different populations. GST and NAT2 polymorphisms were investigated in different population groups, including African populations, and a range of allelic frequencies have been observed. The GSTM1 null genotype frequency, reported in this paper in two South African ethnic groups, is the lowest reported (0.19–0.21). In contrast, these same groups have a high GSTT1 null frequency (0.41–0.54), which is considerably higher than in African-Americans, or other Africans. The GSTT1 null frequency is comparable to the Chinese, a population with a very high oesophageal cancer incidence, similar to that in the African group. The frequency of the GSTPi Val105 variant in the South African Xhosas was also high (0.53), differing significantly from the low frequency in other Africans. These variants could therefore be associated with high cancer susceptibility. In addition, the high proportion of NAT2 “fast” alleles may partially explain the high tuberculosis prevalence in South Africans, due to reduced isoniazid efficacy in the presence of rapid acetylation.

About the article

Published Online: 2005-06-01

Published in Print: 2003-04-25

Citation Information: Clinical Chemistry and Laboratory Medicine, Volume 41, Issue 4, Pages 600–605, ISSN (Print) 1434-6621, DOI: https://doi.org/10.1515/CCLM.2003.090.

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