2-152132151-C-T

Position:

• chr2-152132151-C-T

Variant summary

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

The NM_005843.6(STAM2):​c.988G>A​(p.Gly330Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,458,994 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: STAM2 NM_005843.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.08

Genes affected

STAM2 (HGNC:11358): (signal transducing adaptor molecule 2) The protein encoded by this gene is closely related to STAM, an adaptor protein involved in the downstream signaling of cytokine receptors, both of which contain a SH3 domain and the immunoreceptor tyrosine-based activation motif (ITAM). Similar to STAM, this protein acts downstream of JAK kinases, and is phosphorylated in response to cytokine stimulation. This protein and STAM thus are thought to exhibit compensatory effects on the signaling pathway downstream of JAK kinases upon cytokine stimulation. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STAM2	NM_005843.6	c.988G>A	p.Gly330Ser	missense_variant	11/14	ENST00000263904.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STAM2	ENST00000263904.5	c.988G>A	p.Gly330Ser	missense_variant	11/14	1	NM_005843.6	P1
STAM2	ENST00000463854.5	n.1095G>A		non_coding_transcript_exon_variant	11/11	1
STAM2	ENST00000482997.5	n.1075G>A		non_coding_transcript_exon_variant	11/12	1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1458994 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 725834

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000225

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.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 20, 2021

The c.988G>A (p.G330S) alteration is located in exon 11 (coding exon 11) of the STAM2 gene. This alteration results from a G to A substitution at nucleotide position 988, causing the glycine (G) at amino acid position 330 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.072	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.57	D
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.016	T
MetaRNN	Uncertain	0.46	T
MetaSVM	Benign	-0.89	T
MutationAssessor	Pathogenic	3.2	M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-4.5	D
REVEL	Benign	0.23
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.016	D
Polyphen		0.94	P
Vest4		0.55
MutPred		0.31		Gain of phosphorylation at G330 (P = 0.0471);
MVP		0.58
MPC		0.083
ClinPred		0.97	D
GERP RS		5.0
Varity_R		0.73
gMVP		0.52

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: rs1366933750; hg19: chr2-152988665;