6-71887064-C-T

Position:

• chr6-71887064-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_014989.7(RIMS1):​c.41C>T​(p.Thr14Met) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,158 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RIMS1 NM_014989.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.35

Genes affected

RIMS1 (HGNC:17282): (regulating synaptic membrane exocytosis 1) The protein encoded by this gene is a RAS gene superfamily member that regulates synaptic vesicle exocytosis. This gene also plays a role in the regulation of voltage-gated calcium channels during neurotransmitter and insulin release. Mutations have suggested a role cognition and have been identified as the cause of cone-rod dystrophy type 7. Multiple transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Mar 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28413442).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RIMS1	NM_014989.7	c.41C>T	p.Thr14Met	missense_variant	1/34	ENST00000521978.6	NP_055804.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RIMS1	ENST00000521978.6	c.41C>T	p.Thr14Met	missense_variant	1/34	1	NM_014989.7	ENSP00000428417.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461158 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726824

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 19, 2022

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 14 of the RIMS1 protein (p.Thr14Met). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RIMS1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	.;.;.;.;T;.;.
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D;D
M_CAP	Uncertain	0.28	D
MetaRNN	Benign	0.28	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	L;L;L;L;L;L;L
PrimateAI	Pathogenic	0.90	D
PROVEAN	Benign	-1.6	N;N;N;N;N;N;N
REVEL	Benign	0.071
Sift	Uncertain	0.0030	D;D;D;D;D;D;D
Sift4G	Uncertain	0.011	D;D;D;D;D;D;D
Polyphen		0.99	.;.;.;.;D;.;.
Vest4		0.39
MutPred		0.14		Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);Loss of phosphorylation at T14 (P = 0.0015);
MVP		0.66
MPC		1.6
ClinPred		0.91	D
GERP RS		4.6
Varity_R		0.27
gMVP		0.59

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

LitVar

Other links and lift over

dbSNP: rs1582803774; hg19: chr6-72596767; COSMIC: COSV99328440;