chr11-3856338-T-A

Position:

• chr11-3856338-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001382567.1(STIM1):​c.68T>A​(p.Leu23His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L23F) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: STIM1 NM_001382567.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.15

Genes affected

STIM1 (HGNC:11386): (stromal interaction molecule 1) This gene encodes a type 1 transmembrane protein that mediates Ca2+ influx after depletion of intracellular Ca2+ stores by gating of store-operated Ca2+ influx channels (SOCs). It is one of several genes located in the imprinted gene domain of 11p15.5, an important tumor-suppressor gene region. Alterations in this region have been associated with the Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocrotical carcinoma, and lung, ovarian, and breast cancer. This gene may play a role in malignancies and disease that involve this region, as well as early hematopoiesis, by mediating attachment to stromal cells. Mutations in this gene are associated with fatal classic Kaposi sarcoma, immunodeficiency due to defects in store-operated calcium entry (SOCE) in fibroblasts, ectodermal dysplasia and tubular aggregate myopathy. This gene is oriented in a head-to-tail configuration with the ribonucleotide reductase 1 gene (RRM1), with the 3' end of this gene situated 1.6 kb from the 5' end of the RRM1 gene. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.110562205).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STIM1	NM_001382567.1	c.68T>A	p.Leu23His	missense_variant	1/13	ENST00000526596.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STIM1	ENST00000526596.2	c.68T>A	p.Leu23His	missense_variant	1/13	5	NM_001382567.1	P3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Myopathy with tubular aggregates;C1861451:Stormorken syndrome;C2748557:Combined immunodeficiency due to STIM1 deficiency Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 16, 2023

This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with histidine, which is basic and polar, at codon 23 of the STIM1 protein (p.Leu23His). This variant has not been reported in the literature in individuals affected with STIM1-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on STIM1 protein function. 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	0.064
BayesDel_addAF	Benign	-0.0076	T
BayesDel_noAF	Benign	-0.25
CADD	Uncertain	24
DANN	Benign	0.94
DEOGEN2	Benign	0.30	T;T;.
Eigen	Benign	-0.57
Eigen_PC	Benign	-0.42
FATHMM_MKL	Benign	0.54	D
LIST_S2	Benign	0.71	T;T;T
M_CAP	Benign	0.053	D
MetaRNN	Benign	0.11	T;T;T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	0.0	N;.;N
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-0.90	N;.;N
REVEL	Benign	0.16
Sift	Benign	0.063	T;.;T
Sift4G	Uncertain	0.011	D;D;D
Polyphen		0.0	B;.;.
Vest4		0.34
MutPred		0.19		Gain of disorder (P = 0.0546);Gain of disorder (P = 0.0546);Gain of disorder (P = 0.0546);
MVP		0.37
MPC		1.3
ClinPred		0.23	T
GERP RS		2.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.12
gMVP		0.42

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-3877568;