chr14-67729233-G-T

Variant names:

• chr14-67729233-G-T
• NM_152443.3:c.701G>T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM2 PM5 BP4_Moderate

The NM_152443.3(RDH12):​c.701G>T​(p.Arg234Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,458,820 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. 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. R234H) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RDH12 NM_152443.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.364

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]

ZFYVE26 (HGNC:20761): (zinc finger FYVE-type containing 26) This gene encodes a protein which contains a FYVE zinc finger binding domain. The presence of this domain is thought to target these proteins to membrane lipids through interaction with phospholipids in the membrane. Mutations in this gene are associated with autosomal recessive spastic paraplegia-15. [provided by RefSeq, Oct 2008]

GPHN (HGNC:15465): (gephyrin) This gene encodes a neuronal assembly protein that anchors inhibitory neurotransmitter receptors to the postsynaptic cytoskeleton via high affinity binding to a receptor subunit domain and tubulin dimers. In nonneuronal tissues, the encoded protein is also required for molybdenum cofactor biosynthesis. Mutations in this gene may be associated with the neurological condition hyperplexia and also lead to molybdenum cofactor deficiency. Numerous alternatively spliced transcript variants encoding different isoforms have been described; however, the full-length nature of all transcript variants is not currently known. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-67729233-G-A is described in Lovd as [Pathogenic].
• BP4: Computational evidence support a benign effect (MetaRNN=0.24382302).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RDH12	NM_152443.3	c.701G>T	p.Arg234Leu	missense_variant	Exon 8 of 9	ENST00000551171.6	NP_689656.2
RDH12	XM_047430965.1	c.701G>T	p.Arg234Leu	missense_variant	Exon 8 of 9		XP_047286921.1
ZFYVE26	XM_047431173.1	c.*509C>A		3_prime_UTR_variant	Exon 42 of 42		XP_047287129.1
GPHN	XM_047430879.1	c.1313-5962G>T		intron_variant	Intron 14 of 14		XP_047286835.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RDH12	ENST00000551171.6	c.701G>T	p.Arg234Leu	missense_variant	Exon 8 of 9	1	NM_152443.3	ENSP00000449079.1
RDH12	ENST00000267502.3	c.701G>T	p.Arg234Leu	missense_variant	Exon 7 of 8	5		ENSP00000267502.3
ZFYVE26	ENST00000394455.6	n.3266C>A		non_coding_transcript_exon_variant	Exon 14 of 15	2
RDH12	ENST00000552873.1	n.70G>T		non_coding_transcript_exon_variant	Exon 2 of 2	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1458820 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 725792

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: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	8.7
DANN	Benign	0.93
DEOGEN2	Uncertain	0.73	D;D
Eigen	Benign	-0.93
Eigen_PC	Benign	-0.95
FATHMM_MKL	Benign	0.19	N
LIST_S2	Benign	0.73	.;T
M_CAP	Benign	0.043	D
MetaRNN	Benign	0.24	T;T
MetaSVM	Benign	-0.40	T
MutationAssessor	Benign	1.4	L;L
PrimateAI	Benign	0.26	T
PROVEAN	Uncertain	-2.5	D;D
REVEL	Uncertain	0.30
Sift	Benign	0.25	T;T
Sift4G	Benign	0.35	T;T
Polyphen		0.0	B;B
Vest4		0.29
MutPred		0.54		Gain of stability (P = 0.0439);Gain of stability (P = 0.0439);
MVP		0.86
MPC		0.28
ClinPred		0.28	T
GERP RS		-0.56
Varity_R		0.077
gMVP		0.79

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-68195950; COSMIC: COSV105861669;