2-86604177-G-A

Variant summary

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

The NM_005667.4(RNF103):c.1724C>T(p.Ala575Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/23 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)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: RNF103 NM_005667.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.87

Genes affected

RNF103 (HGNC:12859): (ring finger protein 103) The protein encoded by this gene contains a RING-H2 finger, a motif known to be involved in protein-protein and protein-DNA interactions. This gene is highly expressed in normal cerebellum, but not in the cerebral cortex. The expression of the rat counterpart in the frontal cortex and hippocampus was shown to be induced by elctroconvulsive treatment (ECT) as well as chronic antidepressant treatment, suggesting that this gene may be a molecular target for ECT and antidepressants. The protein is a ubiquitin ligase that functions in the endoplasmic reticulum-associated degradation pathway. Alternative splicing of this gene results in multiple transcript variants. Read-through transcription also exists between this gene and the downstream CHMP3 (charged multivesicular body protein 3) gene. [provided by RefSeq, Oct 2011]

RNF103-CHMP3 (HGNC:):

CHMP3-AS1 (HGNC:55795): (CHMP3 and RNF103 antisense RNA 1)

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	UniProt
RNF103	NM_005667.4	c.1724C>T	p.Ala575Val	missense_variant	4/4	ENST00000237455.5
RNF103-CHMP3	NM_001198954.1	c.132+16153C>T		intron_variant
CHMP3-AS1	NR_183900.1	n.254-12999G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RNF103	ENST00000237455.5	c.1724C>T	p.Ala575Val	missense_variant	4/4	1	NM_005667.4	P1
CHMP3-AS1	ENST00000439077.1	n.249-12999G>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461414 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727034

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Asia WGS AF: 0.00144 AC: 5 AN: 3478

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

Aug 15, 2023

The c.1724C>T (p.A575V) alteration is located in exon 4 (coding exon 4) of the RNF103 gene. This alteration results from a C to T substitution at nucleotide position 1724, causing the alanine (A) at amino acid position 575 to be replaced by a valine (V). 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	0.074
BayesDel_addAF	Benign	-0.077	T
BayesDel_noAF	Benign	-0.35
Cadd	Benign	20
Dann	Uncertain	0.99
DEOGEN2	Benign	0.043	T
Eigen	Benign	-0.064
Eigen_PC	Benign	0.13
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.0098	T
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.52	N
REVEL	Benign	0.11
Sift	Benign	0.053	T
Sift4G	Benign	0.089	T
Polyphen		0.049	B
Vest4		0.17
MutPred		0.24		Loss of loop (P = 0.0804);
MVP		0.29
MPC		0.20
ClinPred		0.26	T
GERP RS		5.5
Varity_R		0.11
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.27		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.27		Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs372592911; hg19: chr2-86831300;