chr14-88385837-G-A

Position:

• chr14-88385837-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PM5 PP5

The NM_018418.5(SPATA7):​c.19G>A​(p.Val7Ile) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V7F) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 34)
• Consequence: SPATA7 NM_018418.5 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 3.71

Genes affected

SPATA7 (HGNC:20423): (spermatogenesis associated 7) This gene, originally isolated from testis, is also expressed in retina. Mutations in this gene are associated with Leber congenital amaurosis and juvenile retinitis pigmentosa. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-88385837-G-T is described in Lovd as [Pathogenic].
• PP5: Variant 14-88385837-G-A is Pathogenic according to our data. Variant chr14-88385837-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 427873.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr14-88385837-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPATA7	NM_018418.5	c.19G>A	p.Val7Ile	missense_variant, splice_region_variant	1/12	ENST00000393545.9	NP_060888.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPATA7	ENST00000393545.9	c.19G>A	p.Val7Ile	missense_variant, splice_region_variant	1/12	1	NM_018418.5	ENSP00000377176.4

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 56

GnomAD4 genome Cov.: 34

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Leber congenital amaurosis Pathogenic:1

Pathogenic, no assertion criteria provided

research

Rui Chen Lab, Baylor College of Medicine

May 09, 2017

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Benign	-0.010	T
BayesDel_noAF	Benign	-0.27
CADD	Pathogenic	35
DANN	Benign	0.97
DEOGEN2	Benign	0.12	T
Eigen	Benign	0.18
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.30	T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-1.0	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.055
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
MutPred		0.42		Gain of phosphorylation at A7 (P = 0.0424);
MVP		0.26
ClinPred		0.94	D
GERP RS		4.4

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.88		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.88		Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs371609982; hg19: chr14-88852181;