chr2-127048537-T-C

Position:

• chr2-127048537-T-C

Variant summary

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

The NM_139343.3(BIN1):​c.1771A>G​(p.Arg591Gly) 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. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. R591R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: BIN1 NM_139343.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.13

Genes affected

BIN1 (HGNC:1052): (bridging integrator 1) This gene encodes several isoforms of a nucleocytoplasmic adaptor protein, one of which was initially identified as a MYC-interacting protein with features of a tumor suppressor. Isoforms that are expressed in the central nervous system may be involved in synaptic vesicle endocytosis and may interact with dynamin, synaptojanin, endophilin, and clathrin. Isoforms that are expressed in muscle and ubiquitously expressed isoforms localize to the cytoplasm and nucleus and activate a caspase-independent apoptotic process. Studies in mouse suggest that this gene plays an important role in cardiac muscle development. Alternate splicing of the gene results in several transcript variants encoding different isoforms. Aberrant splice variants expressed in tumor cell lines have also been described. [provided by RefSeq, Mar 2016]

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=0.31287354).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BIN1	NM_139343.3	c.1771A>G	p.Arg591Gly	missense_variant	19/19	ENST00000316724.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BIN1	ENST00000316724.10	c.1771A>G	p.Arg591Gly	missense_variant	19/19	1	NM_139343.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Myopathy, centronuclear, 2 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 13, 2020

This sequence change replaces arginine with glycine at codon 591 of the BIN1 protein (p.Arg591Gly). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and glycine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with BIN1-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: "Tolerated"; PolyPhen-2: "Possibly 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	Uncertain	0.56
BayesDel_addAF	Uncertain	0.049	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.34	.;.;.;.;.;.;.;.;.;T;.
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.27
FATHMM_MKL	Benign	0.61	D
LIST_S2	Pathogenic	0.97	D;D;D;D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.25	D
MetaRNN	Benign	0.31	T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	-0.010	T
MutationAssessor	Uncertain	2.2	.;.;.;.;.;.;.;.;.;M;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;N;N
PrimateAI	Uncertain	0.56	T
PROVEAN	Pathogenic	-4.6	D;D;D;D;D;D;D;D;D;D;D
REVEL	Uncertain	0.30
Sift	Uncertain	0.0030	D;D;D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.021	D;D;D;D;D;D;D;D;D;D;D
Polyphen		0.18	B;P;B;B;P;B;B;B;P;B;B
Vest4		0.41
MutPred		0.42		.;.;.;.;.;.;.;.;.;Loss of solvent accessibility (P = 0.0807);.;
MVP		0.79
MPC		0.76
ClinPred		0.98	D
GERP RS		1.8
Varity_R		0.84
gMVP		0.84

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: chr2-127806113;