NM_000257.4:c.1491G>T

Variant summary

Our verdict is Pathogenic. The variant received 15 ACMG points: 15P and 0B. PM1PP2PP3_StrongPP5_Very_Strong

The NM_000257.4(MYH7):​c.1491G>T​(p.Glu497Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,614,094 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E497G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

MYH7
NM_000257.4 missense

Scores

12
7
1

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:13

Conservation

PhyloP100: 2.72

Publications

13 publications found
Variant links:
Genes affected
MYH7 (HGNC:7577): (myosin heavy chain 7) Muscle myosin is a hexameric protein containing 2 heavy chain subunits, 2 alkali light chain subunits, and 2 regulatory light chain subunits. This gene encodes the beta (or slow) heavy chain subunit of cardiac myosin. It is expressed predominantly in normal human ventricle. It is also expressed in skeletal muscle tissues rich in slow-twitch type I muscle fibers. Changes in the relative abundance of this protein and the alpha (or fast) heavy subunit of cardiac myosin correlate with the contractile velocity of cardiac muscle. Its expression is also altered during thyroid hormone depletion and hemodynamic overloading. Mutations in this gene are associated with familial hypertrophic cardiomyopathy, myosin storage myopathy, dilated cardiomyopathy, and Laing distal myopathy. [provided by RefSeq, May 2022]
MYH7 Gene-Disease associations (from GenCC):
  • dilated cardiomyopathy
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • dilated cardiomyopathy 1S
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
  • hypertrophic cardiomyopathy
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • hypertrophic cardiomyopathy 1
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
  • MYH7-related skeletal myopathy
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
  • myopathy, myosin storage, autosomal recessive
    Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • myopathy, myosin storage, autosomal dominant
    Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
  • congenital myopathy 7A, myosin storage, autosomal dominant
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Ebstein anomaly
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • familial isolated dilated cardiomyopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • hyaline body myopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • left ventricular noncompaction
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • arrhythmogenic right ventricular cardiomyopathy
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen
  • congenital heart disease
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 15 ACMG points.

PM1
In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 19 uncertain in NM_000257.4
PP2
Missense variant in the MYH7 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 341 curated pathogenic missense variants (we use a threshold of 10). The gene has 16 curated benign missense variants. Gene score misZ: 3.9329 (above the threshold of 3.09). Trascript score misZ: 6.7889 (above the threshold of 3.09). GenCC associations: The gene is linked to myopathy, myosin storage, autosomal recessive, MYH7-related skeletal myopathy, congenital myopathy 7A, myosin storage, autosomal dominant, Ebstein anomaly, hyaline body myopathy, left ventricular noncompaction, hypertrophic cardiomyopathy 1, dilated cardiomyopathy 1S, dilated cardiomyopathy, congenital heart disease, familial isolated dilated cardiomyopathy, myopathy, myosin storage, autosomal dominant, arrhythmogenic right ventricular cardiomyopathy, hypertrophic cardiomyopathy.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.976
PP5
Variant 14-23428587-C-A is Pathogenic according to our data. Variant chr14-23428587-C-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 14124.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MYH7NM_000257.4 linkc.1491G>T p.Glu497Asp missense_variant Exon 15 of 40 ENST00000355349.4 NP_000248.2
MYH7NM_001407004.1 linkc.1491G>T p.Glu497Asp missense_variant Exon 14 of 39 NP_001393933.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MYH7ENST00000355349.4 linkc.1491G>T p.Glu497Asp missense_variant Exon 15 of 40 1 NM_000257.4 ENSP00000347507.3
MYH7ENST00000713768.1 linkc.1491G>T p.Glu497Asp missense_variant Exon 15 of 41 ENSP00000519070.1
MYH7ENST00000713769.1 linkc.1491G>T p.Glu497Asp missense_variant Exon 14 of 39 ENSP00000519071.1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152206
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.000288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000795
AC:
2
AN:
251488
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000198
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000479
AC:
7
AN:
1461888
Hom.:
0
Cov.:
32
AF XY:
0.00000550
AC XY:
4
AN XY:
727244
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.000230
AC:
6
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1112010
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.439
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152206
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74364
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
41450
American (AMR)
AF:
0.00
AC:
0
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.000288
AC:
1
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5192
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68040
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:13
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Pathogenic:4
Jun 10, 2025
GeneDx
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Reported in individuals with sub-clinical cardiomyopathy (PMID: 25228707, 25543971); Not observed at significant frequency in large population cohorts (gnomAD); Functional analysis of the Drosophila myosin heavy chain ortholog and molecular modeling of human beta-cardiac myosin suggest that charge reversal of E497 disrupts a salt bridge with R712, which may decrease ATPase activity and actin sliding velocity (PMID: 26446785); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 18555187, 21958740, 24510615, 25543971, 25351510, 27247418, 27532257, 23549607, 26246073, 24793961, 16267253, 25558701, 28193612, 32894683, 33605878, 34542152, 29121657, 31447099, 25228707, 37652022, 29300372, 26446785, 34556856, 21310275, 33764162, 35470680, 25611685, 33495597, 38186735, 38757491) -

Oct 08, 2014
Stanford Center for Inherited Cardiovascular Disease, Stanford University
Significance:Likely pathogenic
Review Status:no assertion criteria provided
Collection Method:clinical testing

Note this variant was found in clinical genetic testing performed by one or more labs who may also submit to ClinVar. Thus any internal case data may overlap with the internal case data of other labs. The interpretation reviewed below is that of the Stanford Center for Inherited Cardiovascular Disease. p.Glu497Asp (c.1419G>T) in MYH7. The results have been re-reviewed multiple times, most recently on August 27th, 2014. Additional data further supporting pathogenicity was available. Given the strong case data, the segregation data, and the absence in the general population we consider this variant likely disease causing. To the best of our knowledge this variant has been seen in at least 9, but possibly 14 unrelated families with HCM (not including this patient's family). There may be overlap between some of the published cases and cases in our center and in the genetic testing labs databases. We have seen this variant in three families with HCM in our center. The variant was reported in two members of one family with HCM studied by the Seidman group (Arad et al 2005).The proband in this family had apical hypertrophy while the other family member with this variant had massive concentric hypertrophy, syncope, and an ICD, along with comorbid coronary artery disease. For one of the family’s in our center, there is moderate co-segregation data to support the pathogenicity of this variant in that four individuals with HCM either tested positive for this variant or can be inferred to carry it based on pedigree analysis. However, we do not have confirmation of either phenotype or genotype on anyone in this family. The testing was reportedly done as part of a research endeavor. Of note, this case may overlap with the one reported by the Seidman group (Arad et al 2005). We also have segregation data in another family with both the proband and his affected mother having the variant. Per their ClinVar submission(SCV000059378), LMM has seen this variant in 5 probands with HCM. In one of those families another affected individual also had the variant. They classify this as likely pathogenic. Ackerman's group observed the variant in two unrelated patients with HCM in their Mayo cohort who underwent analysis in their local lab (Bos et al 2014). A polar, neutral Glutamate is substituted with a polar, neutral Asparagine therefore this variant change does not affect the net charge. The Glutamate at codon 497 is completely conserved across species as are the neighboring amino acids. In silico analysis with Polyphen-2 predicts this variant to be probably damaging. Per the LMM ClinVar submission, the variant was predicted to be pathogenic using a computational tool, which was validated by our laboratory using a set of cardiomyopathy variants with well-established clinical significance. This tool's pathogenic prediction is estimated to be correct 94% of the time (Jordan 2011). Mutation Taster predicts this variant to be disease-causing. Other variants in nearby codons have been reported in association with cardiomyopathy including p.Met493Leu, p.Met493Lys, p.Glu299Lys, p.Glu500Ala, p.Tyr501His, and p.Tyr501Cys. In total the variant has not been seen in ~6,800 published controls and individuals from publicly available population datasets. There is no variation at codon 497 listed in the NHLBI Exome Sequencing Project dataset, which currently includes variant calls on ~6,500 Caucasian and African American individuals (as of 10/8/13). There is also no variation at this codon listed in dbSNP or 1000 genomes (as of 10/8/13). The variant was not observed in the following published control samples: Arad et al. did not find this variant in 100 presumed normal control individuals. Unfortunately we don’t have control data from any of the testing laboratories. Bos et al did not observe the variant in 200 ostensibly healthy controls." -

Mar 24, 2021
Mayo Clinic Laboratories, Mayo Clinic
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

PS4, PM2_supporting, PM1, PP3 -

Feb 10, 2021
Revvity Omics, Revvity
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Hypertrophic cardiomyopathy Pathogenic:3
Jul 29, 2024
All of Us Research Program, National Institutes of Health
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This missense variant replaces glutamic acid with aspartic acid at codon 497 in the myosin head/motor domain of the MYH7 protein. Computational prediction suggests that this variant may have a deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). This variant is found within a highly conserved region of the myosin head domain. Missense variants in this region have been shown to be significantly overrepresented in individuals with hypertrophic cardiomyopathy (PMID: 27532257). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in over ten individuals affected with hypertrophic cardiomyopathy (PMID: 16267253, 21958740, 23549607, 24793961, 25351510, 25558701, 25611685, 27247418, 27532257, 29121657, 32894683, 33495597, 33764162, 34556856, 35470680). It has been shown that this variant segregates with disease in two affected individuals in one family (PMID: 16267253). This variant has been identified in 2/251488 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Based on the available evidence, this variant is classified as Likely Pathogenic. -

Apr 05, 2019
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.Glu497Asp variant in MYH7 has been reported in >=6 individuals with HCM and segregated with disease in 3 affected relatives from 2 families (Arad 2005, Ho 2013, Kapplinger 2014, Homburger 2016, LMM data). This variant has also been reported by other clinical laboratories in in ClinVar (Variation ID 14124) and has been identified in 2/9850 Ashkenazi Jewish chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org/; dbSNP rs267606911). Please note that for diseases with clinical variability or reduced penetrance, pathogenic variants may be present at a low frequency in the general population. Glutamic acid (Glu) at position 497 is highly conserved in mammals and across evolutionarily distant species and the change to aspartic acid (Asp) was predicted to be pathogenic using a computational tool clinically validated by our laboratory. This tool's pathogenic prediction is estimated to be correct 94% of the time (Jordan 2011). Of note, the p.Glu497Asp variant lies in the head region of the protein. Missense variants in this region have been reported and statistically indicated to be more likely to cause disease (Walsh 2016). In summary, although additional studies are required to fully establish its clinical significance, the p.Glu497Asp variant is likely pathogenic. The ACMG/AMP Criteria applied (Richards 2015): PS4_Moderate, PP1_Supporting, PP3, PM1. -

Jan 19, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with aspartic acid, which is acidic and polar, at codon 497 of the MYH7 protein (p.Glu497Asp). This variant is present in population databases (rs267606911, gnomAD 0.02%). This missense change has been observed in individuals with hypertrophic cardiomyopathy (PMID: 16267253, 23549607, 24510615). ClinVar contains an entry for this variant (Variation ID: 14124). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt MYH7 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects MYH7 function (PMID: 21310275, 26446785). For these reasons, this variant has been classified as Pathogenic. -

Cardiomyopathy Pathogenic:2
Feb 18, 2025
Color Diagnostics, LLC DBA Color Health
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This missense variant replaces glutamic acid with aspartic acid at codon 497 of the MYH7 protein. Computational prediction suggests that this variant may have a deleterious impact on protein structure and function. This variant is found within a highly conserved region of the myosin head domain. Missense variants in this region have been shown to be significantly overrepresented in individuals with affected with hypertrophic cardiomyopathy (PMID: 27532257). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in more than ten individuals affected with hypertrophic cardiomyopathy (PMID: 16267253, 21958740, 23549607, 24793961, 25351510, 25558701, 25611685, 27247418, 27532257, 29121657, 32894683, 33495597, 33764162, 34542152, 34556856, 35470680, 38186735, 38757491). It has been shown that this variant segregates with disease in two affected individuals in one family (PMID: 16267253). This variant has been identified in 2/251488 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Based on the available evidence, this variant is classified as Likely Pathogenic. -

Feb 01, 2023
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Dilated cardiomyopathy 1S;C1842160:Myosin storage myopathy;C1850709:Myopathy, myosin storage, autosomal recessive;C3495498:Hypertrophic cardiomyopathy 1;C4552004:MYH7-related skeletal myopathy Pathogenic:1
Feb 21, 2024
Fulgent Genetics, Fulgent Genetics
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Dilated cardiomyopathy 1S Pathogenic:1
Jan 01, 2022
Provincial Medical Genetics Program of British Columbia, University of British Columbia
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Cardiovascular phenotype Pathogenic:1
May 03, 2022
Ambry Genetics
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.E497D pathogenic mutation (also known as c.1491G>T), located in coding exon 13 of the MYH7 gene, results from a G to T substitution at nucleotide position 1491. The glutamic acid at codon 497 is replaced by aspartic acid, an amino acid with highly similar properties. This alteration is located in the myosin head domain, which contains a statistically significant clustering of pathogenic missense variants (Homburger JR et al. Proc Natl Acad Sci U S A, 2016 06;113:6701-6; Walsh R et al. Genet Med, 2017 02;19:192-203; Ambry internal data). This alteration has been identified in numerous unrelated patients with hypertrophic cardiomyopathy and has been reported to co-segregate with disease in one small family (Arad M et al. Circulation. 2005;112(18):2805-11; Maron BJ et al. Am J Cardiol. 2011;108(12):1783-7; Arad M et al. Isr Med Assoc J. 2014;16(11):707-13; Kapplinger JD et al. J Cardiovasc Transl Res. 2014;7:347-61; Walsh R et al. Genet. Med. 2017;19:192-203; Mattivi CL et al. Circ Genom Precis Med. 2020 10;13(5):453-459; Puckelwartz MJ et a. J Am Heart Assoc. 2021 04;10(7):e019944; Ambry internal data). Functional studies of the orthologous residue in a transgenic Drosophila model, coupled with molecular modeling of human beta-cardiac myosin, demonstrated that E497 is involved in charge-dependent interactions between the relay helix and the converter domain. Disruption of this interaction by either charge reversal or introduction of a sterically smaller amino acid obviate this interaction, resulting in reduced ATPase activity and actin sliding velocity (Kronert WA et al. J. Biol. Chem., 2015 Dec;290:29270-80). In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation. -

Hypertrophic cardiomyopathy 1 Pathogenic:1
Nov 01, 2005
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
CardioboostCm
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.44
D
BayesDel_noAF
Pathogenic
0.39
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.95
D
Eigen
Uncertain
0.40
Eigen_PC
Uncertain
0.31
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Uncertain
0.96
D
M_CAP
Pathogenic
0.98
D
MetaRNN
Pathogenic
0.98
D
MetaSVM
Pathogenic
0.98
D
MutationAssessor
Pathogenic
3.4
M
PhyloP100
2.7
PrimateAI
Pathogenic
0.88
D
PROVEAN
Uncertain
-2.6
D
REVEL
Pathogenic
0.88
Sift
Uncertain
0.0010
D
Sift4G
Pathogenic
0.0010
D
Polyphen
0.51
P
Vest4
0.95
MutPred
0.83
Gain of catalytic residue at H492 (P = 0.0343);
MVP
0.92
MPC
2.0
ClinPred
0.98
D
GERP RS
3.6
Varity_R
0.84
gMVP
1.0
Mutation Taster
=0/100
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs267606911; hg19: chr14-23897796; API