Study Report

Basic Info
Reference |
Campos, S. B., 2010 PMID: 19800079
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Citation |
Campos, S. B., D. M. Miranda, et al. (2010). "Association of polymorphisms of the tryptophan hydroxylase 2 gene with risk for bipolar disorder or suicidal behavior." J Psychiatr Res 44(5): 271-274.
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Disease Type |
Bipolar Disorder |
Study Design |
case-control |
Study Type |
Candidate-gene association study |
Sample Size |
303 diagnosed with bipolar disorder and 224 healthy controls |
SNP/Region/Marker Size |
8 tagSNPs |
Predominant Ethnicity |
Caucasian |
Population |
Brazilian |
Gender |
70.95% (215) females in patients, 67.85% (152) females in controls. |
Age Group |
adult
:
mean age 41.43(SD=13.09), range 19-68 years for patients, mean age 49.77(SD=21.88), range 19-71 for controls.
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Detail Info
Sample Diagnosis |
DSM-IV |
Sample Status |
Lifetime suicide attempt history is 46.2%, hospitalization is 72.72%, smoking is 48.18% in patients. |
Technique |
Genotyping was performed using a PCR-Realtime in the allelic discrimination mode (Strategene Mx3005 - MxPro QPCR-Software, 2007) using the TaqMan Genotyping Master Mix (Applied Biosystems, Foster City, CA). |
Statistical Method |
Statistical analyses were performed using UNPHASED version 3.0.12 and Haploview. |
Result Summary |
Single markers, genotype and haplotype association analysis did not show significant genetic association with bipolar disorder or suicidal behavior. |

SNPs reported by this study for BD (count: 8)
SNP |
Related Gene(s) |
Allele Change |
Risk Allele |
Statistical Values |
Author Comments |
Result Category |
rs7955501 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs10506645 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs10879357 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs11179000 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs1487275 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs4448731 |
TPH2
|
|
|
|
The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs4565946 |
TPH2
|
|
|
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The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
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rs4760820 |
TPH2
|
|
|
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The allele and genotype distribution of all SNPs showed no d......
The allele and genotype distribution of all SNPs showed no differences between BD patients and controls.
More...
|
Negative
|

Haplotypes reported by this study for BD (count: 3)
Markers |
Haplotype |
Related Gene(s)/Region(s) |
Statistical Values |
Author Comments |
Result Category |
rs7955501 - rs10506645 - rs4760820 |
ATC |
TPH2
|
P-value = 0.05, OR = 4.117
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The A-T-C haplotype was significantly more frequent in patie......
The A-T-C haplotype was significantly more frequent in patients with BD when compared with controls, but the result did not survive permutation testing.
More...
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Positive
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rs4565946 - rs11179000 - rs7955501 - rs10506645 |
CATT |
TPH2
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P-value = 0.03, OR = 2.162e-007
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The C-A-T-T haplotype was significantly more frequent in pat......
The C-A-T-T haplotype was significantly more frequent in patients with BD when compared with controls, but the result did not survive permutation testing.
More...
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Positive
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rs4448731 - rs4565946 - rs11179000 |
CCT |
TPH2
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P-value = 0.05; OR = 5.224e-008
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The C-C-T haplotype occurred only in controls. But the resul......
The C-C-T haplotype occurred only in controls. But the result did not survive permutation testing.
More...
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Positive
|

Genes reported by this study for BD (count: 1)
Gene |
Statistical Values/Author Comments |
Result Category |
TPH2 |
Our findings do not support the association between diagnosis of BD or suicidal behavior and TPH2 po......
Our findings do not support the association between diagnosis of BD or suicidal behavior and TPH2 polymorphisms.
More...
|
Negative
|