16-30765022-C-T

Position:

• chr16-30765022-C-T

Variant summary

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

The NM_014771.4(RNF40):​c.734C>T​(p.Thr245Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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: RNF40 NM_014771.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.46

Genes affected

RNF40 (HGNC:16867): (ring finger protein 40) The protein encoded by this gene contains a RING finger, a motif known to be involved in protein-protein and protein-DNA interactions. This protein was reported to interact with the tumor suppressor protein RB1. Studies of the rat counterpart suggested that this protein may function as an E3 ubiquitin-protein ligase, and facilitate the ubiquitination and degradation of syntaxin 1, which is an essential component of the neurotransmitter release machinery. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2011]

RNF40 (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/exons	MANE	Protein	UniProt
RNF40	NM_014771.4	c.734C>T	p.Thr245Ile	missense_variant	6/20	ENST00000324685.11	NP_055586.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RNF40	ENST00000324685.11	c.734C>T	p.Thr245Ile	missense_variant	6/20	1	NM_014771.4	ENSP00000325677.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

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

Feb 06, 2023

The c.734C>T (p.T245I) alteration is located in exon 6 (coding exon 5) of the RNF40 gene. This alteration results from a C to T substitution at nucleotide position 734, causing the threonine (T) at amino acid position 245 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	Uncertain	0.34
BayesDel_addAF	Uncertain	0.096	D
BayesDel_noAF	Benign	-0.10
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.48	T;.;T;.
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.90	D;D;D;D
M_CAP	Benign	0.032	D
MetaRNN	Uncertain	0.44	T;T;T;T
MetaSVM	Benign	-0.71	T
MutationAssessor	Benign	2.0	M;.;.;M
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-4.0	D;D;D;D
REVEL	Benign	0.20
Sift	Benign	0.072	T;D;T;D
Sift4G	Uncertain	0.034	D;D;D;D
Polyphen		0.97	D;.;.;D
Vest4		0.50
MutPred		0.23		Loss of ubiquitination at K250 (P = 0.1106);.;Loss of ubiquitination at K250 (P = 0.1106);Loss of ubiquitination at K250 (P = 0.1106);
MVP		0.52
MPC		0.71
ClinPred		0.97	D
GERP RS		5.8
Varity_R		0.39
gMVP		0.38

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: chr16-30776343;