chr7-73537310-C-T

Variant names:

• chr7-73537310-C-T
• rs142166738
• NM_001707.4:c.597G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001707.4(BCL7B):​c.597G>A​(p.Ala199Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,752 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A199A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: BCL7B NM_001707.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.81
• Publications: 4 publications found

Genes affected

BCL7B (HGNC:1005): (BAF chromatin remodeling complex subunit BCL7B) This gene encodes a member of the BCL7 family including BCL7A, BCL7B and BCL7C proteins. This member is BCL7B, which contains a region that is highly similar to the N-terminal segment of BCL7A or BCL7C proteins. The BCL7A protein is encoded by the gene known to be directly involved in a three-way gene translocation in a Burkitt lymphoma cell line. This gene is located at a chromosomal region commonly deleted in Williams syndrome. This gene is highly conserved from C. elegans to human. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Oct 2010]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=-2.81 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001707.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BCL7B	NM_001707.4	MANE Select	c.597G>A	p.Ala199Ala	synonymous	Exon 6 of 6	NP_001698.2
	BCL7B	NM_001301061.2		c.630G>A	p.Ala210Ala	synonymous	Exon 7 of 7	NP_001287990.1	F2Z3H6
	BCL7B	NM_001197244.2		c.426G>A	p.Ala142Ala	synonymous	Exon 5 of 5	NP_001184173.1	Q9BQE9-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BCL7B	ENST00000223368.7	TSL:1 MANE Select	c.597G>A	p.Ala199Ala	synonymous	Exon 6 of 6	ENSP00000223368.2	Q9BQE9-1
	BCL7B	ENST00000945444.1		c.708G>A	p.Ala236Ala	synonymous	Exon 7 of 7	ENSP00000615503.1
	BCL7B	ENST00000871802.1		c.675G>A	p.Ala225Ala	synonymous	Exon 7 of 7	ENSP00000541861.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000399 AC: 1 AN: 250442 AF XY: 0.00000738

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461752 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727178

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.0000447 AC: 2 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39694

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53392

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5764

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111940

Other (OTH) AF: 0.0000331 AC: 2 AN: 60380

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.14
DANN	Benign	0.63
PhyloP100		-2.8

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

Other links and lift over

dbSNP: rs142166738; hg19: chr7-72951640;