2-127048046-ATTT-ATTTTT

Variant names:

• chr2-127048046-A-ATT
• rs367627116
• NM_139343.3:c.*478_*479dupAA

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_139343.3(BIN1):​c.*478_*479dupAA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000761 in 39,418 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000076 (0 hom.)
• Consequence: BIN1 NM_139343.3 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.103
• Publications: 0 publications found

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]

BIN1 Gene-Disease associations (from GenCC):

• myopathy, centronuclear, 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• centronuclear myopathy

  Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
• autosomal dominant centronuclear myopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive centronuclear myopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BIN1	NM_139343.3	c.*478_*479dupAA		3_prime_UTR_variant	Exon 19 of 19	ENST00000316724.10	NP_647593.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BIN1	ENST00000316724.10	c.*478_*479dupAA		3_prime_UTR_variant	Exon 19 of 19	1	NM_139343.3	ENSP00000316779.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.0000761 AC: 3 AN: 39418 Hom.: 0 Cov.: 0 AF XY: 0.0000491 AC XY: 1 AN XY: 20350

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00135 AC: 1 AN: 742

American (AMR) AF: 0.000653 AC: 2 AN: 3062

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 722

East Asian (EAS) AF: 0.00 AC: 0 AN: 2178

South Asian (SAS) AF: 0.00 AC: 0 AN: 5514

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 2136

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 100

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 22976

Other (OTH) AF: 0.00 AC: 0 AN: 1988

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.10
Mutation Taster		=100/0	polymorphism

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs367627116; hg19: chr2-127805622;