1-63534124-A-G

Variant names:

• chr1-63534124-A-G
• rs1570388072
• NM_032437.4:c.712A>G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032437.4(EFCAB7):​c.712A>G​(p.Thr238Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,192 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: EFCAB7 NM_032437.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.246

Genes affected

EFCAB7 (HGNC:29379): (EF-hand calcium binding domain 7) Predicted to enable calcium ion binding activity. Predicted to be involved in positive regulation of protein import into nucleus; positive regulation of protein localization to ciliary membrane; and positive regulation of transcription by RNA polymerase II. Predicted to be located in ciliary membrane. Predicted to be extrinsic component of membrane. Predicted to be part of plasma membrane protein complex. [provided by Alliance of Genome Resources, Apr 2022]

ITGB3BP (HGNC:6157): (integrin subunit beta 3 binding protein) This gene encodes a transcriptional coregulator that binds to and enhances the activity of members of the nuclear receptor families, thyroid hormone receptors and retinoid X receptors. This protein also acts as a corepressor of NF-kappaB-dependent signaling. This protein induces apoptosis in breast cancer cells through a caspase 2-mediated signaling pathway. This protein is also a component of the centromere-specific histone H3 variant nucleosome associated complex (CENP-NAC) and may be involved in mitotic progression by recruiting the histone H3 variant CENP-A to the centromere. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.035497487).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFCAB7	NM_032437.4	c.712A>G	p.Thr238Ala	missense_variant	Exon 6 of 14	ENST00000371088.5	NP_115813.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFCAB7	ENST00000371088.5	c.712A>G	p.Thr238Ala	missense_variant	Exon 6 of 14	1	NM_032437.4	ENSP00000360129.4
EFCAB7	ENST00000493605.1	n.103A>G		non_coding_transcript_exon_variant	Exon 2 of 2	2
ITGB3BP	ENST00000478138.1	n.198-4938T>C		intron_variant	Intron 1 of 4	3
EFCAB7	ENST00000496956.1	n.-9A>G		upstream_gene_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461192 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 726898

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.712A>G (p.T238A) alteration is located in exon 6 (coding exon 5) of the EFCAB7 gene. This alteration results from a A to G substitution at nucleotide position 712, causing the threonine (T) at amino acid position 238 to be replaced by an alanine (A). 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	Benign	0.063
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	1.8
DANN	Benign	0.73
DEOGEN2	Benign	0.00067	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.028	N
LIST_S2	Benign	0.47	T
M_CAP	Benign	0.0061	T
MetaRNN	Benign	0.035	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.26	N
PrimateAI	Benign	0.28	T
PROVEAN	Benign	0.050	N
REVEL	Benign	0.063
Sift	Benign	0.69	T
Sift4G	Benign	0.89	T
Polyphen		0.0	B
Vest4		0.029
MutPred		0.28		Loss of helix (P = 0.0068);
MVP		0.092
MPC		0.16
ClinPred		0.031	T
GERP RS		-5.4
Varity_R		0.034
gMVP		0.15

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

LitVar

Other links and lift over

dbSNP: rs1570388072; hg19: chr1-63999795;