20-35652648-T-C

Position:

• chr20-35652648-T-C

Variant summary

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

The NM_006047.6(RBM12):​c.2675A>G​(p.Glu892Gly) variant causes a missense change involving the alteration of a 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: 32)
• Consequence: RBM12 NM_006047.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.67

Genes affected

RBM12 (HGNC:9898): (RNA binding motif protein 12) This gene encodes a protein that contains several RNA-binding motifs, potential transmembrane domains, and proline-rich regions. This gene and the gene for copine I overlap at map location 20q11.21. Alternative splicing in the 5' UTR results in four transcript variants. All variants encode the same protein. [provided by RefSeq, Nov 2010]

CPNE1 (HGNC:2314): (copine 1) Calcium-dependent membrane-binding proteins may regulate molecular events at the interface of the cell membrane and cytoplasm. This gene encodes a calcium-dependent protein that also contains two N-terminal type II C2 domains and an integrin A domain-like sequence in the C-terminus. However, the encoded protein does not contain a predicted signal sequence or transmembrane domains. This protein has a broad tissue distribution and it may function in membrane trafficking. This gene and the gene for RNA binding motif protein 12 overlap at map location 20q11.21. Alternate splicing results in multiple transcript variants encoding different proteins. [provided by RefSeq, Aug 2008]

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
RBM12	NM_006047.6	c.2675A>G	p.Glu892Gly	missense_variant	3/3	ENST00000374114.8
CPNE1	NM_152925.3	c.-1+12112A>G		intron_variant		ENST00000397443.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RBM12	ENST00000374114.8	c.2675A>G	p.Glu892Gly	missense_variant	3/3	1	NM_006047.6	P1
CPNE1	ENST00000397443.7	c.-1+12112A>G		intron_variant		5	NM_152925.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Dec 22, 2023

The c.2675A>G (p.E892G) alteration is located in exon 3 (coding exon 1) of the RBM12 gene. This alteration results from a A to G substitution at nucleotide position 2675, causing the glutamic acid (E) at amino acid position 892 to be replaced by a glycine (G). 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	0.43
BayesDel_addAF	Benign	-0.080	T
BayesDel_noAF	Benign	-0.35
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.22	T;T;T
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.86	.;.;D
M_CAP	Benign	0.0089	T
MetaRNN	Uncertain	0.62	D;D;D
MetaSVM	Benign	-1.2	T
MutationAssessor	Benign	1.7	L;L;L
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-4.8	D;D;D
REVEL	Benign	0.25
Sift	Uncertain	0.0080	D;D;D
Sift4G	Uncertain	0.033	D;D;D
Polyphen		0.82	P;P;P
Vest4		0.66
MutPred		0.45		Loss of stability (P = 0.0431);Loss of stability (P = 0.0431);Loss of stability (P = 0.0431);
MVP		0.36
MPC		0.24
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.66
gMVP		0.64

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: chr20-34240570;