9-101546955-G-T

Position:

• chr9-101546955-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_019592.7(RNF20):​c.883G>T​(p.Val295Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RNF20 NM_019592.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.18

Genes affected

RNF20 (HGNC:10062): (ring finger protein 20) The protein encoded by this gene shares similarity with BRE1 of S. cerevisiae. The protein encoded by this human gene is an E3 ubiquitin ligase that regulates chromosome structure by monoubiquitinating histone H2B. This protein acts as a putative tumor suppressor and positively regulates the p53 tumor suppressor as well as numerous histone H2A and H2B genes. In contrast, this protein also suppresses the expression of several protooncogenes and growth-related genes, including many genes that are induced by epidermal growth factor. This gene selectively suppresses the expression of some genes by interfering with chromatin recruitment of transcription elongation factor SII (TFIIS). [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31432462).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RNF20	NM_019592.7	c.883G>T	p.Val295Phe	missense_variant	7/20	ENST00000389120.8
RNF20	XM_011518862.2	c.883G>T	p.Val295Phe	missense_variant	7/20
RNF20	XM_047423594.1	c.883G>T	p.Val295Phe	missense_variant	8/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RNF20	ENST00000389120.8	c.883G>T	p.Val295Phe	missense_variant	7/20	1	NM_019592.7	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Oct 02, 2023

The c.883G>T (p.V295F) alteration is located in exon 7 (coding exon 6) of the RNF20 gene. This alteration results from a G to T substitution at nucleotide position 883, causing the valine (V) at amino acid position 295 to be replaced by a phenylalanine (F). 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	Pathogenic	0.86
BayesDel_addAF	Uncertain	0.075	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.15
Sift	Benign	0.048	D
Sift4G	Benign	0.53	T
Polyphen		0.94	P
Vest4		0.50
MutPred		0.25		Loss of MoRF binding (P = 0.0953);
MVP		0.65
MPC		1.1
ClinPred		0.87	D
GERP RS		5.5
Varity_R		0.43
gMVP		0.60

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: chr9-104309237;