15-43197390-C-A

Variant names:

• chr15-43197390-C-A
• rs768835503
• NM_001114134.2:c.1988G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001114134.2(EPB42):​c.1988G>T​(p.Arg663Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R663K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: EPB42 NM_001114134.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.70
• Publications: 0 publications found

Genes affected

EPB42 (HGNC:3381): (erythrocyte membrane protein band 4.2) Erythrocyte membrane protein band 4.2 is an ATP-binding protein which may regulate the association of protein 3 with ankyrin. It probably has a role in erythrocyte shape and mechanical property regulation. Mutations in the EPB42 gene are associated with recessive spherocytic elliptocytosis and recessively transmitted hereditary hemolytic anemia. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ENSG00000285117 (HGNC:):

CCNDBP1 (HGNC:1587): (cyclin D1 binding protein 1) This gene was identified by the interaction of its gene product with Grap2, a leukocyte-specific adaptor protein important for immune cell signaling. The protein encoded by this gene was shown to interact with cyclin D. Transfection of this gene in cells was reported to reduce the phosphorylation of Rb gene product by cyclin D-dependent protein kinase, and inhibit E2F1-mediated transcription activity. This protein was also found to interact with helix-loop-helix protein E12 and is thought to be a negative regulator of liver-specific gene expression. Several alternatively spliced variants have been found for this gene. [provided by RefSeq, Apr 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001114134.2. 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
	EPB42	NM_001114134.2	MANE Select	c.1988G>T	p.Arg663Ile	missense	Exon 13 of 13	NP_001107606.1	P16452-1
	EPB42	NM_000119.3		c.2078G>T	p.Arg693Ile	missense	Exon 13 of 13	NP_000110.2	P16452-2
	CCNDBP1	NM_012142.5	MANE Select	c.*2549C>A		downstream_gene	N/A	NP_036274.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EPB42	ENST00000441366.7	TSL:1 MANE Select	c.1988G>T	p.Arg663Ile	missense	Exon 13 of 13	ENSP00000396616.2	P16452-1
	ENSG00000285117	ENST00000563128.6	TSL:3	c.446+4454G>T		intron	N/A	ENSP00000520455.1	A0AAQ5BII2
	EPB42	ENST00000567019.2	TSL:1	n.1494G>T		non_coding_transcript_exon	Exon 8 of 8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461890 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	0.011	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.34	T
Eigen	Benign	-0.022
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.66	D
LIST_S2	Uncertain	0.87	D
M_CAP	Uncertain	0.096	D
MetaRNN	Uncertain	0.53	D
MetaSVM	Benign	-0.43	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		1.7
PrimateAI	Benign	0.41	T
PROVEAN	Pathogenic	-5.1	D
REVEL	Uncertain	0.40
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.96	D
Vest4		0.68
MutPred		0.65		Gain of stability (P = 0.072)
MVP		0.77
ClinPred		0.98	D
GERP RS		2.3
Varity_R		0.53
gMVP		0.64

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: rs768835503; hg19: chr15-43489588;