NM_032120.4:c.134C>G

Variant names:

• chr7-92529498-C-G
• NM_032120.4:c.134C>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_032120.4(RBM48):​c.134C>G​(p.Ser45Cys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RBM48 NM_032120.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.79
• Publications: 0 publications found

Genes affected

RBM48 (HGNC:21785): (RNA binding motif protein 48) Predicted to enable RNA binding activity. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.966

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RBM48	NM_032120.4	c.134C>G	p.Ser45Cys	missense_variant	Exon 2 of 5	ENST00000265732.10	NP_115496.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RBM48	ENST00000265732.10	c.134C>G	p.Ser45Cys	missense_variant	Exon 2 of 5	1	NM_032120.4	ENSP00000265732.5
RBM48	ENST00000481551.5	c.134C>G	p.Ser45Cys	missense_variant	Exon 2 of 4	1		ENSP00000419242.1
RBM48	ENST00000496410.1	c.-41C>G		5_prime_UTR_premature_start_codon_gain_variant	Exon 2 of 3	3		ENSP00000418333.1
RBM48	ENST00000496410.1	c.-41C>G		5_prime_UTR_variant	Exon 2 of 3	3		ENSP00000418333.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Feb 03, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 45 of the RBM48 protein (p.Ser45Cys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RBM48-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt RBM48 protein function with a positive predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.87
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.50	D;.
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	D;D
M_CAP	Benign	0.028	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Uncertain	0.11	D
MutationAssessor	Pathogenic	3.3	M;M
PhyloP100		5.8
PrimateAI	Uncertain	0.58	T
PROVEAN	Pathogenic	-4.7	D;D
REVEL	Uncertain	0.61
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.92
MutPred		0.84		Loss of catalytic residue at S45 (P = 0.0595);Loss of catalytic residue at S45 (P = 0.0595);
MVP		0.82
MPC		0.79
ClinPred		1.0	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.78
gMVP		0.70
Mutation Taster		=23/77	disease causing

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

Other links and lift over

hg19: chr7-92158812; COSMIC: COSV50394580; COSMIC: COSV50394580;