E-ISSN 2231-170X | ISSN 2231-1696
 

Original Article 


Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala.

Abstract
This study addresses the issues in translating the laboratory derived data obtained during discovery phase of research to a clinical setting using a breast cancer model. Laboratory-based risk assessment indicated that a family history of breast cancer, reduced folate carrier 1 (RFC1) G80A, thymidylate synthase (TYMS) 5’-UTR 28bp tandem repeat, methylene tetrahydrofolate reductase (MTHFR) C677T and catecholamine-O-methyl transferase (COMT) genetic polymorphisms in one-carbon metabolic pathway increase the risk for breast cancer. Glutamate carboxypeptidase II (GCPII) C1561T and cytosolic serine hydroxymethyl transferase (cSHMT) C1420T polymorphisms were found to decrease breast cancer risk. In order to test the clinical validity of this information in the risk prediction of breast cancer, data was stratified based on number of protective alleles into four categories and in each category sensitivity and 1-specificity values were obtained based on the distribution of number of risk alleles in cases and controls. Receiver operating characteristic (ROC) curves were plotted and the area under ROC curve (C) was used as a measure of discriminatory ability between cases and controls. In subjects without any protective allele, aberrations in one-carbon metabolism showed perfect prediction (C=0.93) while the predictability was lost in subjects with one protective allele (C=0.60). However, predictability increased steadily with increasing number of protective alleles (C=0.63 for 2 protective alleles and C=0.71 for 3 protective alleles). The cut-off point for discrimination was >4 alleles in all predictable combinations.
Models of this kind can serve as valuable tools in translational research, especially in identifying high-risk individuals and reducing the disease risk either by life style modification or by medical intervention.

Key words: Breast cancer, One-carbon metabolism, Polymorphism, Odds ratios, Receiver operating characteristic (ROC) curve, Risk prediction


 
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How to Cite this Article
Pubmed Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. J Med Allied Sci. 2011; 1(1): 7-13.


Web Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. https://jmas.in/?mno=210041 [Access: January 12, 2023].


AMA (American Medical Association) Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. J Med Allied Sci. 2011; 1(1): 7-13.



Vancouver/ICMJE Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. J Med Allied Sci. (2011), [cited January 12, 2023]; 1(1): 7-13.



Harvard Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala (2011) Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. J Med Allied Sci, 1 (1), 7-13.



Turabian Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. 2011. Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. Journal of Medical and Allied Sciences, 1 (1), 7-13.



Chicago Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. "Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction." Journal of Medical and Allied Sciences 1 (2011), 7-13.



MLA (The Modern Language Association) Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala. "Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction." Journal of Medical and Allied Sciences 1.1 (2011), 7-13. Print.



APA (American Psychological Association) Style

Shaik Mohammad Naushad, Shree Divyya, Addepalli Pavani, Yedluri Rupasree, Raghunadha Rao Digumarti, Suryanarayana Raju Gottumukkala, Vijay Kumar Kutala (2011) Clinical utility of polymorphisms in one-carbon metabolism for breast cancer risk prediction. Journal of Medical and Allied Sciences, 1 (1), 7-13.