2-227981851-C-A

Variant names:

• chr2-227981851-C-A
• NM_001142644.2:c.4969G>T

Variant summary

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

The NM_001142644.2(SPHKAP):​c.4969G>T​(p.Val1657Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SPHKAP NM_001142644.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.55

Genes affected

SPHKAP (HGNC:30619): (SPHK1 interactor, AKAP domain containing) Enables protein kinase A binding activity. Predicted to be located in Z disc. Predicted to be active in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

LOC105373918 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPHKAP	NM_001142644.2	c.4969G>T	p.Val1657Phe	missense_variant	Exon 12 of 12	ENST00000392056.8	NP_001136116.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPHKAP	ENST00000392056.8	c.4969G>T	p.Val1657Phe	missense_variant	Exon 12 of 12	1	NM_001142644.2	ENSP00000375909.3
SPHKAP	ENST00000344657.5	c.4882G>T	p.Val1628Phe	missense_variant	Exon 11 of 11	1		ENSP00000339886.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 08, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.4969G>T (p.V1657F) alteration is located in exon 12 (coding exon 12) of the SPHKAP gene. This alteration results from a G to T substitution at nucleotide position 4969, causing the valine (V) at amino acid position 1657 to be replaced by a phenylalanine (F). 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	0.90
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	T;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.042	D
MetaRNN	Uncertain	0.65	D;D
MetaSVM	Benign	-1.2	T
MutationAssessor	Uncertain	2.5	M;.
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-2.7	D;D
REVEL	Uncertain	0.30
Sift	Uncertain	0.027	D;D
Sift4G	Uncertain	0.0040	D;D
Polyphen		1.0	D;D
Vest4		0.83
MutPred		0.55		Loss of MoRF binding (P = 0.0953);.;
MVP		0.30
MPC		0.36
ClinPred		0.99	D
GERP RS		5.8
Varity_R		0.65
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr2-228846567;