chr16-2756444-G-C

Position:

• chr16-2756444-G-C

Variant summary

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

The NM_016333.4(SRRM2):​c.80G>C​(p.Arg27Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SRRM2 NM_016333.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.03

Genes affected

SRRM2 (HGNC:16639): (serine/arginine repetitive matrix 2) Enables C2H2 zinc finger domain binding activity and protein N-terminus binding activity. Involved in mRNA splicing, via spliceosome. Located in Cajal body and nuclear speck. Part of U2-type catalytic step 2 spliceosome and U2-type precatalytic spliceosome. Biomarker of Parkinson's disease. [provided by Alliance of Genome Resources, Apr 2022]

SRRM2 (HGNC:):

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	Protein	UniProt
SRRM2	NM_016333.4	c.80G>C	p.Arg27Pro	missense_variant	2/15	ENST00000301740.13	NP_057417.3
SRRM2	XM_047433882.1	c.161G>C	p.Arg54Pro	missense_variant	2/10		XP_047289838.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SRRM2	ENST00000301740.13	c.80G>C	p.Arg27Pro	missense_variant	2/15	1	NM_016333.4	ENSP00000301740.8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

GeneDx

Nov 11, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	31
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.51	D;.;T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.85	D;D;D
M_CAP	Benign	0.030	D
MetaRNN	Uncertain	0.55	D;D;D
MetaSVM	Benign	-0.67	T
MutationAssessor	Uncertain	2.5	M;.;.
PrimateAI	Pathogenic	0.84	D
PROVEAN	Uncertain	-2.8	D;.;.
REVEL	Benign	0.25
Sift4G	Uncertain	0.0040	D;D;T
Polyphen		1.0	D;.;.
Vest4		0.87
MutPred		0.33		Loss of MoRF binding (P = 0.0084);Loss of MoRF binding (P = 0.0084);Loss of MoRF binding (P = 0.0084);
MVP		0.52
ClinPred		0.97	D
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.84
gMVP		0.91

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr16-2806445;