Overview

SNPs are specific locations in the DNA where genetic variations can occur. Every person has a unique composition of variations.

SNP rs4680 is located on chromosome 22. The most common variation at this position is the G. People with other variations might have letter A instead.

Since humans have each twice (one from each parent), these letter-variations occur on both chromosomes. People can have the same or different letters on both chromosomes. Every person's individual variation assembly is referred to as genotype. For SNP rs4680 there are 3 currently known genotypes: A/G , G/G or A/A

Genome Browser

This interactive browser visualizes what no human can see with the naked eye - our DNA. From a down to a specific position on a . The position you are looking at here is the exact location of SNP rs4680. Explore more SNPs and their effects on the body by browsing left and right along the DNA strand.

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Mitochondrial DNAMitochondrial DNA
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Effects relating to rs4680

Your genetic code influences you in many ways. This may be by either causing you to have a specific trait (eg. Eye colour) or your risk of developing a specific disease.

Each combination of genetic letters (called bases) is called a genotype for this specific SNP. Each Genotype can have a different effect on your body. The table below shows which genotype causes which traits or disease risks.

Current research shows 11 disease risks associated with rs4680. The following table shows the relationship between genotype and .



Genotype AG

Effect Likelihood Level of evidenceResearch
Diabetes mellitus
0.81x
Catechol-O-methyltransferase association with hemoglobin A1c (2016)

Text Extract:

In the DPP, the rs4680 val allele was borderline associated with lower diabetes incidence among participants randomized to metformin (HR = 0.81 [0.651.00], p = 0.05)

PMCID: PMCID4924514
Read on PMC
Aggression
2.10x
Risk assessment of aggressive behavior in Chinese patients with schizophrenia by fMRI and COMT gene

Tang, Xiaoli, Jin, Jun, Tang, Yi, Cao, Jinbo, Huang, Junjie

Text Extract:

However, the P-value of the statistical test of high quality studies was very close to the borderline and it showed a strong association between COMT polymorphism rs4680 and aggression in this recessive gene model (OR =2.10, P=0.064)

PMCID: PMCID5308585
Read on PMC
Neonatal abstinence syndrome (NAS)
0.50x
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

Text Extract:

In the replication cohort, mothers with the COMT rs4680 G allele had infants with a reduced risk for treatment with 2 medications for NAS (adjusted OR=0.5, p=0.04), meeting point-wise significance

PMCID: PMCID5206487
Read on PMC
Endometriosis
1.45x
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

Text Extract:

Obviously higher frequency of rs4680 A allele has been discovered in case group (P=.042), demonstrated a positive association with the risk of endometriosis (OR=1.450, 95% CI=1.0122.076)

PMCID: PMCID6344181
Read on PMC
Fibromyalgia (FM)
11.30x
Association of Catechol-O-methyltransferase single nucleotide polymorphisms, ethnicity, and sex in a large cohort of fibromyalgia patients (2018)

Lee, Chee, Liptan, Ginevra, Kantorovich, Svetlana, Sharma, Maneesh, Brenton, Ashley

Text Extract:

Among those diagnosed with FM, African-Americans had 11.3 times increased odds of having a COMT diplotype corresponding to high pain sensitivity than low pain sensitivity, regardless of whether or not they were diagnosed with FM (p=7.2710249, adjusted for sex and age) Studies examining the association between COMT and fibromyalgia have largely focused on a single functional polymorphism, rs4680 or val158met, [17, 18, 21] which reduces enzymatic activity by 3- to 4-fold, and is associated with an increased risk of chronic pain [19, 23, 4044]

PMCID: PMCID6390547
Read on PMC
Alcohol use disorder (AUD)
0.81x
Lack of Association between rs4680 Polymorphism in Catechol-O-Methyltransferase Gene and Alcohol Use Disorder: A Meta-Analysis

Jin, Xin-Rong, Zhao, Zhi-Qiang

Text Extract:

Subgroup analysis by gender suggested rs4680 polymorphism was marginally associated with an elevated risk to AUD among males (VM vs. MM, OR = 0.81, 95% CI 0.67-0.98, P = 0.03)

PMCID: PMCID7685839
Read on PMC
Schizophrenia (SCZ/SZN/SZ)
2.07x
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

Text Extract:

Schizophrenic subjects homozygous for the Met allele at rs4680 doubled the probability of lifetime prevalence of cannabis use in comparison to Val homozygous (Mantel-Haenszel OR=2.07, 95% CI: 1.27-3.26, P=0.0031, in the combined sample)

PMID: PMID21310591
Read on PubMed
Endometrial cancer
0.83x
Catechol-O-methyltransferase and cytochrome P-450 1B1 polymorphisms and endometrial cancer risk: a meta-analysis. (2013)

Teng, Yue, He, Caiyun, Zuo, Xiaohang, Li, Xu

Text Extract:

As for COMT Val158Met (rs4680) polymorphism, the heterogeneous genotype showed a decreased risk for endometrial cancer compared with the common homogenous genotype in a fixed-effect model in Asian population (Met/Val vs. Val/Val: pooled OR, 0.83; 95% CI, 0.70-0.98; P = 0.033; I = 29.2%), whereas no positive results are found in other subgroups or models.COMT Val158Met was seen to show a decreased risk for endometrial cancer in Asian population

PMID: PMID23370603
Read on PubMed
Medication overuse headache (MOH)
2.81x
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

Text Extract:

In addition, carriers of the STin2 VNTR short allele were found at higher odds for the composite poor outcome including unsuccessful withdrawal therapy and relapse within 12 months of follow-up after successful detoxification (OR 2.81, 95%CI 1.26-6.25, P = 0.009).Our results indicate that genotyping for COMT rs4680 and SLC6A4 STin2 VNTR could be useful for the identification of MOH patients at higher risk of poor prognosis after drug withdrawal.© 2014 The Author(s) European Journal of Neurology © 2014 EAN

PMID: PMID24684248
Read on PubMed
Loss of control over eating
1.62x
Effects of single genetic variants and polygenic obesity risk scores on disordered eating in adolescents - The HUNT study. (2018)

Sardahaee, Farzaneh Saeedzadeh, Holmen, Turid Lingaas, Micali, Nadia, Kvaløy, Kirsti

Text Extract:

Additionally, a significant association was observed between the GRS and loss of control over eating in the total sample (OR: 1.62, CI 95%: 1.01-2.61, p = 0.046).The COMT variant (rs4680) was associated with poor appetite/undereating

PMID: PMID28694222
Read on PubMed
Legend:
Increased probability
Decreased probability
No known effect

Genotype GG

Effect Likelihood Level of evidenceResearch
Diabetes mellitus
1.00x
Catechol-O-methyltransferase association with hemoglobin A1c (2016)

Text Extract:

In the DPP, the rs4680 val allele was borderline associated with lower diabetes incidence among participants randomized to metformin (HR = 0.81 [0.651.00], p = 0.05)

PMCID: PMCID4924514
Read on PMC
Aggression
1.00x
Risk assessment of aggressive behavior in Chinese patients with schizophrenia by fMRI and COMT gene

Tang, Xiaoli, Jin, Jun, Tang, Yi, Cao, Jinbo, Huang, Junjie

Text Extract:

However, the P-value of the statistical test of high quality studies was very close to the borderline and it showed a strong association between COMT polymorphism rs4680 and aggression in this recessive gene model (OR =2.10, P=0.064)

PMCID: PMCID5308585
Read on PMC
Neonatal abstinence syndrome (NAS)
0.25x
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

Text Extract:

In the replication cohort, mothers with the COMT rs4680 G allele had infants with a reduced risk for treatment with 2 medications for NAS (adjusted OR=0.5, p=0.04), meeting point-wise significance

PMCID: PMCID5206487
Read on PMC
Endometriosis
1.00x
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

Text Extract:

Obviously higher frequency of rs4680 A allele has been discovered in case group (P=.042), demonstrated a positive association with the risk of endometriosis (OR=1.450, 95% CI=1.0122.076)

PMCID: PMCID6344181
Read on PMC
Fibromyalgia (FM)
1.00x
Association of Catechol-O-methyltransferase single nucleotide polymorphisms, ethnicity, and sex in a large cohort of fibromyalgia patients (2018)

Lee, Chee, Liptan, Ginevra, Kantorovich, Svetlana, Sharma, Maneesh, Brenton, Ashley

Text Extract:

Among those diagnosed with FM, African-Americans had 11.3 times increased odds of having a COMT diplotype corresponding to high pain sensitivity than low pain sensitivity, regardless of whether or not they were diagnosed with FM (p=7.2710249, adjusted for sex and age) Studies examining the association between COMT and fibromyalgia have largely focused on a single functional polymorphism, rs4680 or val158met, [17, 18, 21] which reduces enzymatic activity by 3- to 4-fold, and is associated with an increased risk of chronic pain [19, 23, 4044]

PMCID: PMCID6390547
Read on PMC
Alcohol use disorder (AUD)
1.00x
Lack of Association between rs4680 Polymorphism in Catechol-O-Methyltransferase Gene and Alcohol Use Disorder: A Meta-Analysis

Jin, Xin-Rong, Zhao, Zhi-Qiang

Text Extract:

Subgroup analysis by gender suggested rs4680 polymorphism was marginally associated with an elevated risk to AUD among males (VM vs. MM, OR = 0.81, 95% CI 0.67-0.98, P = 0.03)

PMCID: PMCID7685839
Read on PMC
Schizophrenia (SCZ/SZN/SZ)
1.00x
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

Text Extract:

Schizophrenic subjects homozygous for the Met allele at rs4680 doubled the probability of lifetime prevalence of cannabis use in comparison to Val homozygous (Mantel-Haenszel OR=2.07, 95% CI: 1.27-3.26, P=0.0031, in the combined sample)

PMID: PMID21310591
Read on PubMed
Endometrial cancer
1.00x
Catechol-O-methyltransferase and cytochrome P-450 1B1 polymorphisms and endometrial cancer risk: a meta-analysis. (2013)

Teng, Yue, He, Caiyun, Zuo, Xiaohang, Li, Xu

Text Extract:

As for COMT Val158Met (rs4680) polymorphism, the heterogeneous genotype showed a decreased risk for endometrial cancer compared with the common homogenous genotype in a fixed-effect model in Asian population (Met/Val vs. Val/Val: pooled OR, 0.83; 95% CI, 0.70-0.98; P = 0.033; I = 29.2%), whereas no positive results are found in other subgroups or models.COMT Val158Met was seen to show a decreased risk for endometrial cancer in Asian population

PMID: PMID23370603
Read on PubMed
Medication overuse headache (MOH)
1.00x
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

Text Extract:

In addition, carriers of the STin2 VNTR short allele were found at higher odds for the composite poor outcome including unsuccessful withdrawal therapy and relapse within 12 months of follow-up after successful detoxification (OR 2.81, 95%CI 1.26-6.25, P = 0.009).Our results indicate that genotyping for COMT rs4680 and SLC6A4 STin2 VNTR could be useful for the identification of MOH patients at higher risk of poor prognosis after drug withdrawal.© 2014 The Author(s) European Journal of Neurology © 2014 EAN

PMID: PMID24684248
Read on PubMed
Loss of control over eating
1.00x
Effects of single genetic variants and polygenic obesity risk scores on disordered eating in adolescents - The HUNT study. (2018)

Sardahaee, Farzaneh Saeedzadeh, Holmen, Turid Lingaas, Micali, Nadia, Kvaløy, Kirsti

Text Extract:

Additionally, a significant association was observed between the GRS and loss of control over eating in the total sample (OR: 1.62, CI 95%: 1.01-2.61, p = 0.046).The COMT variant (rs4680) was associated with poor appetite/undereating

PMID: PMID28694222
Read on PubMed
Levodopa-induced dyskinesia (LID)
1.20x
Association of COMT rs4680 and MAO-B rs1799836 polymorphisms with levodopa-induced dyskinesia in Parkinson's disease-a meta-analysis. (2021)

Yin, Yanying, Liu, Yang, Xu, Meisong, Zhang, XiaoMin, Li, Chen

Text Extract:

Analysis of pooled ORs and 95% CIs suggested that the AA genotype of COMT(rs4680) was associated with LID (OR = 1.39, 95%CI: 1.02-1.89, P = 0.039) in the recessive model, and this correlation was more obvious in Brazilian samples in the analysis stratified by ethnicity

PMID: PMID34346015
Read on PubMed
Legend:
Increased probability
Decreased probability
No known effect

Genotype AA

Effect Likelihood Level of evidenceResearch
Diabetes mellitus
0.66x
Catechol-O-methyltransferase association with hemoglobin A1c (2016)

Text Extract:

In the DPP, the rs4680 val allele was borderline associated with lower diabetes incidence among participants randomized to metformin (HR = 0.81 [0.651.00], p = 0.05)

PMCID: PMCID4924514
Read on PMC
Aggression
3.20x
Risk assessment of aggressive behavior in Chinese patients with schizophrenia by fMRI and COMT gene

Tang, Xiaoli, Jin, Jun, Tang, Yi, Cao, Jinbo, Huang, Junjie

Text Extract:

However, the P-value of the statistical test of high quality studies was very close to the borderline and it showed a strong association between COMT polymorphism rs4680 and aggression in this recessive gene model (OR =2.10, P=0.064)

PMCID: PMCID5308585
Read on PMC
Neonatal abstinence syndrome (NAS)
1.00x
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

Text Extract:

In the replication cohort, mothers with the COMT rs4680 G allele had infants with a reduced risk for treatment with 2 medications for NAS (adjusted OR=0.5, p=0.04), meeting point-wise significance

PMCID: PMCID5206487
Read on PMC
Endometriosis
1.90x
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

Text Extract:

Obviously higher frequency of rs4680 A allele has been discovered in case group (P=.042), demonstrated a positive association with the risk of endometriosis (OR=1.450, 95% CI=1.0122.076)

PMCID: PMCID6344181
Read on PMC
Fibromyalgia (FM)
21.60x
Association of Catechol-O-methyltransferase single nucleotide polymorphisms, ethnicity, and sex in a large cohort of fibromyalgia patients (2018)

Lee, Chee, Liptan, Ginevra, Kantorovich, Svetlana, Sharma, Maneesh, Brenton, Ashley

Text Extract:

Among those diagnosed with FM, African-Americans had 11.3 times increased odds of having a COMT diplotype corresponding to high pain sensitivity than low pain sensitivity, regardless of whether or not they were diagnosed with FM (p=7.2710249, adjusted for sex and age) Studies examining the association between COMT and fibromyalgia have largely focused on a single functional polymorphism, rs4680 or val158met, [17, 18, 21] which reduces enzymatic activity by 3- to 4-fold, and is associated with an increased risk of chronic pain [19, 23, 4044]

PMCID: PMCID6390547
Read on PMC
Alcohol use disorder (AUD)
0.66x
Lack of Association between rs4680 Polymorphism in Catechol-O-Methyltransferase Gene and Alcohol Use Disorder: A Meta-Analysis

Jin, Xin-Rong, Zhao, Zhi-Qiang

Text Extract:

Subgroup analysis by gender suggested rs4680 polymorphism was marginally associated with an elevated risk to AUD among males (VM vs. MM, OR = 0.81, 95% CI 0.67-0.98, P = 0.03)

PMCID: PMCID7685839
Read on PMC
Schizophrenia (SCZ/SZN/SZ)
3.14x
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

Text Extract:

Schizophrenic subjects homozygous for the Met allele at rs4680 doubled the probability of lifetime prevalence of cannabis use in comparison to Val homozygous (Mantel-Haenszel OR=2.07, 95% CI: 1.27-3.26, P=0.0031, in the combined sample)

PMID: PMID21310591
Read on PubMed
Endometrial cancer
0.69x
Catechol-O-methyltransferase and cytochrome P-450 1B1 polymorphisms and endometrial cancer risk: a meta-analysis. (2013)

Teng, Yue, He, Caiyun, Zuo, Xiaohang, Li, Xu

Text Extract:

As for COMT Val158Met (rs4680) polymorphism, the heterogeneous genotype showed a decreased risk for endometrial cancer compared with the common homogenous genotype in a fixed-effect model in Asian population (Met/Val vs. Val/Val: pooled OR, 0.83; 95% CI, 0.70-0.98; P = 0.033; I = 29.2%), whereas no positive results are found in other subgroups or models.COMT Val158Met was seen to show a decreased risk for endometrial cancer in Asian population

PMID: PMID23370603
Read on PubMed
Medication overuse headache (MOH)
4.62x
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

Text Extract:

In addition, carriers of the STin2 VNTR short allele were found at higher odds for the composite poor outcome including unsuccessful withdrawal therapy and relapse within 12 months of follow-up after successful detoxification (OR 2.81, 95%CI 1.26-6.25, P = 0.009).Our results indicate that genotyping for COMT rs4680 and SLC6A4 STin2 VNTR could be useful for the identification of MOH patients at higher risk of poor prognosis after drug withdrawal.© 2014 The Author(s) European Journal of Neurology © 2014 EAN

PMID: PMID24684248
Read on PubMed
Loss of control over eating
2.24x
Effects of single genetic variants and polygenic obesity risk scores on disordered eating in adolescents - The HUNT study. (2018)

Sardahaee, Farzaneh Saeedzadeh, Holmen, Turid Lingaas, Micali, Nadia, Kvaløy, Kirsti

Text Extract:

Additionally, a significant association was observed between the GRS and loss of control over eating in the total sample (OR: 1.62, CI 95%: 1.01-2.61, p = 0.046).The COMT variant (rs4680) was associated with poor appetite/undereating

PMID: PMID28694222
Read on PubMed
Levodopa-induced dyskinesia (LID)
1.39x
Association of COMT rs4680 and MAO-B rs1799836 polymorphisms with levodopa-induced dyskinesia in Parkinson's disease-a meta-analysis. (2021)

Yin, Yanying, Liu, Yang, Xu, Meisong, Zhang, XiaoMin, Li, Chen

Text Extract:

Analysis of pooled ORs and 95% CIs suggested that the AA genotype of COMT(rs4680) was associated with LID (OR = 1.39, 95%CI: 1.02-1.89, P = 0.039) in the recessive model, and this correlation was more obvious in Brazilian samples in the analysis stratified by ethnicity

PMID: PMID34346015
Read on PubMed
Legend:
Increased probability
Decreased probability
No known effect

Distribution

Knowing your genome can actually tell you a lot about your ancestors.

The prevalence of the different genotypes is based on the native inhabitants of a region. In the map below you see how common each genotype is in the native inhabitants of those regions. Since genetic material is passed down form generation to generation, your DNA shows traces of the geographical origins of your ancestors.

This data is based on “The 1000 Genomes Project” which established one of the most detailed overviews of human genetic variations across the globe. The regions are broadly categorized into five continental groups: Africa, America, Europe, South Asia and East Asia. All continental groups together display the global prevalence. Click through the regions, to learn more about the local prevalence of the possible genotypes.

At present, there is no distribution data available for SNP rs4680.

Studies and sources

All of the resources below examine SNP rs4680

Genotype AG

PMCID: PMCID5308585
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

PMCID: PMCID5206487
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

PMCID: PMCID6344181
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

PMID: PMID21310591
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

PMID: PMID24684248
PMID: PMID28694222

Genotype GG

PMCID: PMCID5308585
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

PMCID: PMCID5206487
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

PMCID: PMCID6344181
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

PMID: PMID21310591
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

PMID: PMID24684248
PMID: PMID28694222

Genotype AA

PMCID: PMCID5308585
Association of maternal and infant variants in PNOC and COMT genes with Neonatal Abstinence Syndrome severity (2016)

Wachman, Elisha M, Hayes, Marie J, Sherva, Richard, Brown, Mark S, Shrestha, Hira, Logan, Beth A, Heller, Nicole A, Nielsen, David A, Farrer, Lindsay A

PMCID: PMCID5206487
Analysis of the relationship between COMT polymorphisms and endometriosis susceptibility (2019)

Zhai, Jiajia, Jiang, Lei, Wen, Aiping, Jia, Jingde, Zhu, Lili, Fan, Bo

PMCID: PMCID6344181
Interaction between COMT haplotypes and cannabis in schizophrenia: a case-only study in two samples from Spain. (2011)

Costas, Javier, Sanjuán, Julio, Ramos-Ríos, Ramón, Paz, Eduardo, Agra, Santiago, Tolosa, Amparo, Páramo, Mario, Brenlla, Julio, Arrojo, Manuel

PMID: PMID21310591
Functional polymorphisms in COMT and SLC6A4 genes influence the prognosis of patients with medication overuse headache after withdrawal therapy. (2015)

Cargnin, S, Viana, M, Ghiotto, N, Bianchi, M, Sances, G, Tassorelli, C, Nappi, G, Canonico, P L, Genazzani, A A, Terrazzino, S

PMID: PMID24684248
PMID: PMID28694222