13-98177006-G-T

Variant names:

• chr13-98177006-G-T
• NM_178861.5:c.231C>A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_178861.5(RNF113B):​c.231C>A​(p.His77Gln) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: RNF113B NM_178861.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0750

Genes affected

RNF113B (HGNC:17267): (ring finger protein 113B) Predicted to enable metal ion binding activity. Predicted to be involved in snoRNA splicing. Predicted to be part of U2-type spliceosomal complex. [provided by Alliance of Genome Resources, Apr 2022]

FARP1 (HGNC:3591): (FERM, ARH/RhoGEF and pleckstrin domain protein 1) This gene encodes a protein containing a FERM (4.2, exrin, radixin, moesin) domain, a Dbl homology domain, and two pleckstrin homology domains. These domains are found in guanine nucleotide exchange factors and proteins that link the cytoskeleton to the cell membrane. The encoded protein functions in neurons to promote dendritic growth. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2013]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06758988).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RNF113B	NM_178861.5	c.231C>A	p.His77Gln	missense_variant	Exon 1 of 2	ENST00000267291.7	NP_849192.1
FARP1	NM_005766.4	c.-24+33514G>T		intron_variant	Intron 1 of 26	ENST00000319562.11	NP_005757.1
FARP1	NM_001286839.2	c.-24+34229G>T		intron_variant	Intron 1 of 27		NP_001273768.1
FARP1	NM_001001715.4	c.-24+33514G>T		intron_variant	Intron 1 of 2		NP_001001715.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RNF113B	ENST00000267291.7	c.231C>A	p.His77Gln	missense_variant	Exon 1 of 2	1	NM_178861.5	ENSP00000267291.6
FARP1	ENST00000319562.11	c.-24+33514G>T		intron_variant	Intron 1 of 26	1	NM_005766.4	ENSP00000322926.6

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 15, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.231C>A (p.H77Q) alteration is located in exon 1 (coding exon 1) of the RNF113B gene. This alteration results from a C to A substitution at nucleotide position 231, causing the histidine (H) at amino acid position 77 to be replaced by a glutamine (Q). 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	0.086
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.77
CADD	Benign	0.63
DANN	Benign	0.60
DEOGEN2	Benign	0.0033	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.0032	N
LIST_S2	Benign	0.15	T
M_CAP	Benign	0.0024	T
MetaRNN	Benign	0.068	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.0	L
PrimateAI	Benign	0.43	T
PROVEAN	Benign	0.18	N
REVEL	Benign	0.011
Sift	Benign	0.68	T
Sift4G	Benign	0.64	T
Polyphen		0.57	P
Vest4		0.12
MutPred		0.23		Loss of sheet (P = 0.0181);
MVP		0.16
MPC		0.66
ClinPred		0.14	T
GERP RS		-2.2
Varity_R		0.029
gMVP		0.19

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: chr13-98829260;