rs143246852

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_StrongBP6BP7

The NM_000751.3(CHRND):​c.1125G>A​(p.Val375=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000219 in 1,613,904 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

CHRND
NM_000751.3 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.245
Variant links:
Genes affected
CHRND (HGNC:1965): (cholinergic receptor nicotinic delta subunit) The acetylcholine receptor of muscle has 5 subunits of 4 different types: 2 alpha and 1 each of beta, gamma and delta subunits. After acetylcholine binding, the receptor undergoes an extensive conformation change that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane. Defects in this gene are a cause of multiple pterygium syndrome lethal type (MUPSL), congenital myasthenic syndrome slow-channel type (SCCMS), and congenital myasthenic syndrome fast-channel type (FCCMS). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2015]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.56).
BP6
Variant 2-232534008-G-A is Benign according to our data. Variant chr2-232534008-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 285898.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1}.
BP7
Synonymous conserved (PhyloP=0.245 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CHRNDNM_000751.3 linkuse as main transcriptc.1125G>A p.Val375= synonymous_variant 10/12 ENST00000258385.8
CHRNDNM_001256657.2 linkuse as main transcriptc.1080G>A p.Val360= synonymous_variant 9/11
CHRNDNM_001311196.2 linkuse as main transcriptc.822G>A p.Val274= synonymous_variant 10/12
CHRNDNM_001311195.2 linkuse as main transcriptc.543G>A p.Val181= synonymous_variant 8/10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CHRNDENST00000258385.8 linkuse as main transcriptc.1125G>A p.Val375= synonymous_variant 10/121 NM_000751.3 P1Q07001-1
CHRNDENST00000543200.5 linkuse as main transcriptc.1080G>A p.Val360= synonymous_variant 9/112 Q07001-2
CHRNDENST00000441621.6 linkuse as main transcriptc.*307G>A 3_prime_UTR_variant, NMD_transcript_variant 9/115
CHRNDENST00000446616.1 linkuse as main transcriptc.*766G>A 3_prime_UTR_variant, NMD_transcript_variant 10/123

Frequencies

GnomAD3 genomes
AF:
0.000105
AC:
16
AN:
152246
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000220
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000557
AC:
14
AN:
251236
Hom.:
0
AF XY:
0.0000736
AC XY:
10
AN XY:
135880
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000578
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000106
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000231
AC:
338
AN:
1461658
Hom.:
0
Cov.:
32
AF XY:
0.000210
AC XY:
153
AN XY:
727130
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000292
Gnomad4 OTH exome
AF:
0.000166
GnomAD4 genome
AF:
0.000105
AC:
16
AN:
152246
Hom.:
0
Cov.:
33
AF XY:
0.0000538
AC XY:
4
AN XY:
74384
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000220
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000162
Hom.:
0
Bravo
AF:
0.000110
EpiCase
AF:
0.000164
EpiControl
AF:
0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Feb 03, 2016- -
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenNov 01, 2021- -
Lethal multiple pterygium syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeAug 17, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.56
CADD
Benign
7.1
DANN
Benign
0.77

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
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: rs143246852; hg19: chr2-233398718; API