7-73543596-A-G

Position:

• chr7-73543596-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001707.4(BCL7B):​c.217T>C​(p.Phe73Leu) variant causes a missense change. 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 (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: BCL7B NM_001707.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.18

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

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21279967).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BCL7B	NM_001707.4	c.217T>C	p.Phe73Leu	missense_variant	3/6	ENST00000223368.7	NP_001698.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BCL7B	ENST00000223368.7	c.217T>C	p.Phe73Leu	missense_variant	3/6	1	NM_001707.4	ENSP00000223368	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 20, 2023

The c.217T>C (p.F73L) alteration is located in exon 3 (coding exon 3) of the BCL7B gene. This alteration results from a T to C substitution at nucleotide position 217, causing the phenylalanine (F) at amino acid position 73 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.74
BayesDel_addAF	Benign	-0.041	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.069	T;.;T
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T;T;D
M_CAP	Benign	0.0092	T
MetaRNN	Benign	0.21	T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.8	L;L;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-0.96	N;N;.
REVEL	Benign	0.14
Sift	Benign	0.73	T;T;.
Sift4G	Benign	0.67	T;T;T
Polyphen		0.92	P;.;.
Vest4		0.37
MutPred		0.20		Loss of methylation at R68 (P = 0.1742);Loss of methylation at R68 (P = 0.1742);.;
MVP		0.41
MPC		0.70
ClinPred		0.91	D
GERP RS		5.4
Varity_R		0.080
gMVP		0.076

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: chr7-72957926;