Evidence map›Paper›PMID 17651483›Full record

ArticleBehavioral and brain functions : BBF2007

Association of dopamine receptor polymorphisms with schizophrenia and antipsychotic response in a South Indian population.

Neetha N Vijayan, Sujatha Bhaskaran, Linda V Koshy, Chandrasekhar Natarajan, Lekshmy Srinivas, Chandrasekharan M Nair, Priya M Allencherry, Moinak Banerjee

Open access · goldAbstract read
In one paragraph

Article in Behavioral and brain functions : BBF, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 pooled it
1.8field-weighted citation impact, top 16% 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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Genetic Testing for Antipsychotic Pharmacotherapy: Bench to Bedside.Behavioral sciences (Basel, Switzerland) · 2021
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  8. Association study betweenNeuropsychiatric disease and treatment · 2018
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  9. Article
  10. Article
  11. Article
  12. Article
  13. Genetics of schizophrenia from a clinicial perspective.International review of psychiatry (Abingdon, England) · 2012
    Review
  14. Review
  15. Article
  16. Review
  17. The promise and reality of pharmacogenetics in psychiatry.The Psychiatric clinics of North America · 2010
    Review
  18. Research on antipsychotics in India.Indian journal of psychiatry · 2010
    Article
  19. Article
  20. A lesson not learned: allele misassignment.Behavioral and brain functions : BBF · 2007
    Article
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

8 authors at 3 institutions in 1 country.

Neetha N VijayanHuman Molecular Genetics Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India. neethav@yahoo.com
Sujatha Bhaskaran
Linda V Koshy
Chandrasekhar Natarajan
Lekshmy Srinivas
Chandrasekharan M Nair
Priya M Allencherry
Moinak Banerjee
Rajiv Gandhi Centre for Biotechnology · INGeneral Hospital Ernakulam · INInstitute of Mental Health · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlterations in the dopamine transmission and receptor density are hypothesized in the pathophysiology of schizophrenia but ethnic disparities are reported to exist in disease association and therapeutic response to psychotropic medication. Antipsychotics have higher binding affinity to D2 subtype of dopamine receptor. DRD2 Cys311, TaqIB1 and TaqIA1 variants are considered to have either reduced affinity for dopamine and hypo-dopaminergic activity.

methodsWe examined the role of Taq1B, Taq1D, S311C, H313H and Taq1A polymorphisms of DRD2 gene in schizophrenia and antipsychotic treatment response in 213 patients and 196 controls from a homogenous South Indian population. A more detailed genotype phenotype association analysis was carried out to understand the disease in terms of its socio-cultural factors.

resultsH313HTT genotype was found to be associated with schizophrenia (P = 0.004) while TaqIB1B1 genotype was significantly associated with higher psychopathology score. When treatment response was considered H313HCC, TaqIA2A2 and Taq1D1D1 had higher mean improvement scores. TaqID1D1 and H313HTT genotype were found to be significantly higher in responders than in nonresponder group. Distinct shift in the LD patterns of responder and non-responder group was observed. Certain symptoms were characteristic of our patient population. Following medication the scores and presentation of these symptoms tend to vary in the responder and non-responder groups.

conclusionBased on genotype phenotype correlations it can be suggested that certain polymorphisms can be defined for their critical functions in disease and their role in treatment response in South Indian population. The present study suggests that in addition to ethnic bias, socio-cultural factors should also be considered while evaluating genotype phenotype correlations, in association and treatment response to complex disorders like schizophrenia.

Identifiers

PMID17651483
PMCPMC1947997
OpenAlexW2123042233

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.