chr14-67722644-T-C

Position:

• chr14-67722644-T-C

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_152443.3(RDH12):​c.2T>C​(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.000000684 in 1,461,462 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RDH12 NM_152443.3 start_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.85

Genes affected

RDH12 (HGNC:19977): (retinol dehydrogenase 12) The protein encoded by this gene is an NADPH-dependent retinal reductase whose highest activity is toward 9-cis and all-trans-retinol. The encoded enzyme also plays a role in the metabolism of short-chain aldehydes but does not exhibit steroid dehydrogenase activity. Defects in this gene are a cause of Leber congenital amaurosis type 13 and Retinitis Pigmentosa 53. [provided by RefSeq, Sep 2015]

GPHN (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RDH12	NM_152443.3	c.2T>C	p.Met1?	start_lost	3/9	ENST00000551171.6
RDH12	XM_047430965.1	c.2T>C	p.Met1?	start_lost	3/9
GPHN	XM_047430879.1	c.1313-12551T>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RDH12	ENST00000551171.6	c.2T>C	p.Met1?	start_lost	3/9	1	NM_152443.3	P1
RDH12	ENST00000267502.3	c.2T>C	p.Met1?	start_lost	2/8	5		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461462 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727064

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leber congenital amaurosis Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Ophthalmic Genetics Group, Institute of Molecular and Clinical Ophthalmology Basel

Jul 24, 2023

Clinical significance based on ACMG v2.0 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.30
CADD	Benign	21
DANN	Benign	0.94
DEOGEN2	Benign	0.22	T;T
Eigen	Benign	-0.13
Eigen_PC	Benign	-0.039
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Uncertain	0.90	.;D
M_CAP	Pathogenic	0.81	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Uncertain	-0.27	T
MutationTaster	Benign	1.0	D;D;D
PROVEAN	Benign	-0.44	N;N
REVEL	Uncertain	0.55
Sift	Uncertain	0.0050	D;D
Sift4G	Uncertain	0.0090	D;D
Polyphen		0.23	B;B
Vest4		0.90
MutPred		0.96		Gain of catalytic residue at M1 (P = 0.0095);Gain of catalytic residue at M1 (P = 0.0095);
MVP		0.99
ClinPred		0.95	D
GERP RS		5.2
Varity_R		0.43
gMVP		0.78

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr14-68189361;