14-99174218-ATG-A

Position:

• chr14-99174218-ATG-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Moderate PM2 PP5_Moderate

The NM_138576.4(BCL11B):​c.2616_2617del​(p.Met873GlufsTer11) variant causes a frameshift 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 Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: BCL11B NM_138576.4 frameshift
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 7.69

Genes affected

BCL11B (HGNC:13222): (BCL11 transcription factor B) This gene encodes a C2H2-type zinc finger protein and is closely related to BCL11A, a gene whose translocation may be associated with B-cell malignancies. Although the specific function of this gene has not been determined, the encoded protein is known to be a transcriptional repressor, and is regulated by the NURD nucleosome remodeling and histone deacetylase complex. Four alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Aug 2013]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0257 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 14-99174218-ATG-A is Pathogenic according to our data. Variant chr14-99174218-ATG-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1203923.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BCL11B	NM_138576.4	c.2616_2617del	p.Met873GlufsTer11	frameshift_variant	4/4	ENST00000357195.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BCL11B	ENST00000357195.8	c.2616_2617del	p.Met873GlufsTer11	frameshift_variant	4/4	1	NM_138576.4	A2
BCL11B	ENST00000345514.2	c.2403_2404del	p.Met802GlufsTer11	frameshift_variant	3/3	1		P4
BCL11B	ENST00000443726.2	c.2034_2035del	p.Met679GlufsTer11	frameshift_variant	2/2	5

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:2

Likely pathogenic, no assertion criteria provided	clinical testing	Molecular Genetics laboratory, Necker Hospital	Apr 26, 2022	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Aug 13, 2019	Frameshift variant in the C-terminus predicted to result in protein truncation, as the last 22 amino acids are lost and replaced with 10 incorrect amino acids (Stenson et al., 2014); Not observed in large population cohorts (Lek et al., 2016); Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

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: chr14-99640555;