15-63305658-T-C

Position:

• chr15-63305658-T-C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_031301.4(APH1B):​c.651T>C​(p.Phe217=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: APH1B NM_031301.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0410

Genes affected

APH1B (HGNC:24080): (aph-1 homolog B, gamma-secretase subunit) This gene encodes a multi-pass transmembrane protein that is a functional component of the gamma-secretase complex, which also contains presenilin and nicastrin. This protein represents a stabilizing cofactor for the presenilin holoprotein in the complex. The gamma-secretase complex catalyzes the cleavage of integral proteins such as notch receptors and beta-amyloid precursor protein. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14569986).
• BP7: Synonymous conserved (PhyloP=-0.041 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
APH1B	NM_031301.4	c.651T>C	p.Phe217=	synonymous_variant	6/6	ENST00000261879.10
APH1B	NM_001145646.2	c.528T>C	p.Phe176=	synonymous_variant	5/5
APH1B	XM_024450085.2	c.489T>C	p.Phe163=	synonymous_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
APH1B	ENST00000261879.10	c.651T>C	p.Phe217=	synonymous_variant	6/6	1	NM_031301.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.42	T
BayesDel_noAF	Benign	-0.84
CADD	Benign	3.7
DANN	Benign	0.82
DEOGEN2	Benign	0.30	T
FATHMM_MKL	Benign	0.036	N
LIST_S2	Benign	0.29	T
MetaRNN	Benign	0.15	T
MutationTaster	Benign	0.91	D;D
PROVEAN	Benign	-2.1	N
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0090	D
MVP		0.70
GERP RS		0.014

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: rs1047552; hg19: chr15-63597857;