Evidence map›Paper›PMID 22147263›Full record

ArticleMolecular biology reports2012

Spectrum of MTHFR gene SNPs C677T and A1298C: a study among 23 population groups of India.

Kallur Nava Saraswathy, Mohammad Asghar, Ratika Samtani, Benrithung Murry, Prakash Ranjan Mondal, Pradeep Kumar Ghosh, Mohinder Pal Sachdeva

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In one paragraph

Article in Molecular biology reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Pooled it
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  11. Distribution ofIndian journal of clinical biochemistry : IJCB · 2017
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  17. 5-HTTLPR andIndian journal of psychiatry
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Kallur Nava SaraswathyBiochemical and Molecular Lab, Department of Anthropology, University of Delhi, Delhi, 110007, India.
Mohammad Asghar
Ratika Samtani
Benrithung Murry
Prakash Ranjan Mondal
Pradeep Kumar Ghosh
Mohinder Pal Sachdeva
University of Delhi · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Elevated homocysteine is a risk factor for many complex disorders. The role of methylenetetrahydrofolate reductase (MTHFR) gene in methylation of homocysteine makes it one of the most important candidate genes for these disorders. Considering the heterogeneity in its distribution in world populations, we screened MTHFR C677T and A1298C single nucleotide polymorphisms in a total of 23 Indian caste, tribal and religious population groups from five geographical regions of India and belonging to four major linguistic groups. The frequencies of MTHFR 677T and 1298C alleles were found to be 10.08 and 20.66%, respectively. MTHFR homozygous genotype 677TT was absent in eight population groups and homozygous 1298CC was absent in two population groups. 677T allele was found to be highest among north Indian populations with Indo-European tongue and 1298C was high among Dravidian-speaking tribes of east India and south India. The less common mutant haplotype 677T-1298C was observed among seven population groups and overall the frequency of this haplotype was 0.008, which is similar to that of African populations. cis configuration of 677T and 1298C was 0.94%. However, we could not find any individual with four mutant alleles which supports the earlier observation that presence of more than two mutant alleles may decrease the viability of foetus and possibly be a selective disadvantage in the population.

Indexed as

AdultAmino Acid SubstitutionGene FrequencyGenetics, PopulationGenotypeGeographyHumansIndiaMethylenetetrahydrofolate Reductase (NADPH2)Middle AgedPolymorphism, Single NucleotidePopulation GroupsYoung AdultMethylenetetrahydrofolate Reductase (NADPH2)

Identifiers

PMID22147263
OpenAlexW2041569847

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.