chr7-156675814-A-T

Position:

• chr7-156675814-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_030936.4(RNF32):​c.803A>T​(p.Lys268Ile) variant causes a missense 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RNF32 NM_030936.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.404

Genes affected

RNF32 (HGNC:17118): (ring finger protein 32) The protein encoded by this gene contains two RING ring finger motifs. RING finger motifs are present in a variety of functionally distinct proteins and are known to be involved in protein-DNA or protein-protein interactions. This gene was found to be expressed during spermatogenesis, most likely in spermatocytes and/or in spermatids. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2015]

LMBR1 (HGNC:13243): (limb development membrane protein 1) This gene encodes a member of the LMBR1-like membrane protein family. Another member of this protein family has been shown to be a lipocalin transmembrane receptor. A highly conserved, cis-acting regulatory module for the sonic hedgehog gene is located within an intron of this gene. Consequently, disruption of this genic region can alter sonic hedgehog expression and affect limb patterning, but it is not known if this gene functions directly in limb development. Mutations and chromosomal deletions and rearrangements in this genic region are associated with acheiropody and preaxial polydactyly, which likely result from altered sonic hedgehog expression. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10243043).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RNF32	NM_030936.4	c.803A>T	p.Lys268Ile	missense_variant	8/9	ENST00000317955.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RNF32	ENST00000317955.10	c.803A>T	p.Lys268Ile	missense_variant	8/9	1	NM_030936.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 23, 2023

The c.803A>T (p.K268I) alteration is located in exon 8 (coding exon 7) of the RNF32 gene. This alteration results from a A to T substitution at nucleotide position 803, causing the lysine (K) at amino acid position 268 to be replaced by an isoleucine (I). 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	Benign	0.17
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	5.6
DANN	Benign	0.68
DEOGEN2	Benign	0.037	T;T;T;.;T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.053	N
M_CAP	Benign	0.0058	T
MetaRNN	Benign	0.10	T;T;T;T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.1	M;M;M;.;M
MutationTaster	Benign	1.0	N;N;N;N;N;N
PrimateAI	Benign	0.27	T
PROVEAN	Uncertain	-2.4	N;N;N;N;N
REVEL	Benign	0.069
Sift	Benign	0.038	D;D;D;D;D
Sift4G	Benign	0.085	T;T;T;T;T
Polyphen		0.61	P;P;P;P;P
Vest4		0.35
MutPred		0.34		Loss of ubiquitination at K268 (P = 0.0051);Loss of ubiquitination at K268 (P = 0.0051);Loss of ubiquitination at K268 (P = 0.0051);Loss of ubiquitination at K268 (P = 0.0051);Loss of ubiquitination at K268 (P = 0.0051);
MVP		0.24
MPC		0.32
ClinPred		0.55	D
GERP RS		-10
Varity_R		0.097
gMVP		0.37

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: chr7-156468508;