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Human transferrin G277S mutation: a risk factor for iron deficiency anaemia
P L Lee1, C Halloran, R Trevino
1Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA. plee@scripps.edu
British Journal of Haematology
|November 13, 2001
Summary
A specific transferrin gene mutation (G277S) reduces iron binding capacity, increasing the risk of iron deficiency anemia in women. This genetic variant impacts iron metabolism and health outcomes.
Area of Science:
- Genetics
- Biochemistry
- Hematology
Background:
- The transferrin gene exhibits numerous polymorphisms, leading to various electrophoretic variants.
- These genetic variations can influence protein function and physiological processes.
Purpose of the Study:
- To investigate the functional consequences of a specific transferrin gene mutation (G277S).
- To determine the association between the G277S genotype and iron deficiency anemia risk in menstruating women.
Main Methods:
- Analysis of transferrin gene polymorphisms.
- Association study correlating the G277S genotype with iron deficiency anemia prevalence.
- Measurement of total iron binding capacity (TIBC).
Main Results:
- A G-->A mutation at cDNA nucleotide 829 (G277S) was identified.
- The G277S mutation was associated with a reduced total iron binding capacity (TIBC).
- Iron deficiency anemia prevalence was significantly higher in women with the G277S genotype (27% homozygous, 10% heterozygous) compared to wild-type (5%).
Conclusions:
- The G277S transferrin gene mutation has a functional consequence, impacting iron binding.
- The G277S genotype is a significant risk factor for iron deficiency anemia in menstruating white women.
- Understanding transferrin gene variants is crucial for diagnosing and managing iron-related disorders.