rs4987173

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_018960.6(GNMT):​c.716+37G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.43 in 1,613,324 control chromosomes in the GnomAD database, including 152,968 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.41 ( 13022 hom., cov: 31)
Exomes 𝑓: 0.43 ( 139946 hom. )

Consequence

GNMT
NM_018960.6 intron

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.491
Variant links:
Genes affected
GNMT (HGNC:4415): (glycine N-methyltransferase) The protein encoded by this gene is an enzyme that catalyzes the conversion of S-adenosyl-L-methionine (along with glycine) to S-adenosyl-L-homocysteine and sarcosine. This protein is found in the cytoplasm and acts as a homotetramer. Defects in this gene are a cause of GNMT deficiency (hypermethioninemia). Alternative splicing results in multiple transcript variants. Naturally occurring readthrough transcription occurs between the upstream CNPY3 (canopy FGF signaling regulator 3) gene and this gene and is represented with GeneID:107080644. [provided by RefSeq, Jan 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.84).
BP6
Variant 6-42963486-G-A is Benign according to our data. Variant chr6-42963486-G-A is described in ClinVar as [Benign]. Clinvar id is 1251337.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.449 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GNMTNM_018960.6 linkuse as main transcriptc.716+37G>A intron_variant ENST00000372808.4 NP_061833.1
CNPY3-GNMTNR_134890.2 linkuse as main transcriptn.578+37G>A intron_variant, non_coding_transcript_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GNMTENST00000372808.4 linkuse as main transcriptc.716+37G>A intron_variant 1 NM_018960.6 ENSP00000361894 P1

Frequencies

GnomAD3 genomes
AF:
0.409
AC:
62049
AN:
151830
Hom.:
13017
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.395
Gnomad AMI
AF:
0.582
Gnomad AMR
AF:
0.341
Gnomad ASJ
AF:
0.407
Gnomad EAS
AF:
0.104
Gnomad SAS
AF:
0.403
Gnomad FIN
AF:
0.405
Gnomad MID
AF:
0.427
Gnomad NFE
AF:
0.454
Gnomad OTH
AF:
0.421
GnomAD3 exomes
AF:
0.386
AC:
96861
AN:
251258
Hom.:
20158
AF XY:
0.396
AC XY:
53829
AN XY:
135818
show subpopulations
Gnomad AFR exome
AF:
0.401
Gnomad AMR exome
AF:
0.259
Gnomad ASJ exome
AF:
0.414
Gnomad EAS exome
AF:
0.105
Gnomad SAS exome
AF:
0.425
Gnomad FIN exome
AF:
0.401
Gnomad NFE exome
AF:
0.450
Gnomad OTH exome
AF:
0.414
GnomAD4 exome
AF:
0.432
AC:
631602
AN:
1461380
Hom.:
139946
Cov.:
45
AF XY:
0.434
AC XY:
315404
AN XY:
727032
show subpopulations
Gnomad4 AFR exome
AF:
0.401
Gnomad4 AMR exome
AF:
0.274
Gnomad4 ASJ exome
AF:
0.413
Gnomad4 EAS exome
AF:
0.125
Gnomad4 SAS exome
AF:
0.433
Gnomad4 FIN exome
AF:
0.394
Gnomad4 NFE exome
AF:
0.453
Gnomad4 OTH exome
AF:
0.418
GnomAD4 genome
AF:
0.409
AC:
62090
AN:
151944
Hom.:
13022
Cov.:
31
AF XY:
0.404
AC XY:
30014
AN XY:
74270
show subpopulations
Gnomad4 AFR
AF:
0.395
Gnomad4 AMR
AF:
0.341
Gnomad4 ASJ
AF:
0.407
Gnomad4 EAS
AF:
0.105
Gnomad4 SAS
AF:
0.404
Gnomad4 FIN
AF:
0.405
Gnomad4 NFE
AF:
0.454
Gnomad4 OTH
AF:
0.418
Alfa
AF:
0.434
Hom.:
3127
Bravo
AF:
0.401
Asia WGS
AF:
0.258
AC:
899
AN:
3476

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxMay 12, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.84
CADD
Benign
0.57
DANN
Benign
0.56

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.17
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs4987173; hg19: chr6-42931224; COSMIC: COSV55102220; COSMIC: COSV55102220; API