Genetic Variant RNPC3:p.Tyr49Cys (chr1-103526216-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_017619.4(RNPC3):c.146A>G(p.Tyr49Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000715 in 1,399,108 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

RNPC3
NM_017619.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.01

Variant links:

Genes affected

RNPC3 (HGNC:18666): (RNA binding region (RNP1, RRM) containing 3) Two types of spliceosomes catalyze splicing of pre-mRNAs. The major U2-type spliceosome is found in all eukaryotes and removes U2-type introns, which represent more than 99% of pre-mRNA introns. The minor U12-type spliceosome is found in some eukaryotes and removes U12-type introns, which are rare and have distinct splice consensus signals. The U12-type spliceosome consists of several small nuclear RNAs and associated proteins. This gene encodes a 65K protein that is a component of the U12-type spliceosome. This protein contains two RNA recognition motifs (RRMs), suggesting that it may contact one of the small nuclear RNAs of the minor spliceosome. [provided by RefSeq, Jul 2008]

RNPC3 links:

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ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
RNPC3	NM_017619.4 link	c.146A>G	p.Tyr49Cys	missense_variant	Exon 1 of 15	ENST00000423855.7	NP_060089.1	Q96LT9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RNPC3	ENST00000423855.7 link	c.146A>G	p.Tyr49Cys	missense_variant	Exon 1 of 15	1	NM_017619.4	ENSP00000391432.1		Q96LT9-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000644

AC:

AN:

155298

Hom.:

AF XY:

0.0000121

AC XY:

AN XY:

82360

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000410

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

7.15e-7

AC:

AN:

1399108

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

690052

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000280

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jun 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.146A>G (p.Y49C) alteration is located in exon 1 (coding exon 1) of the RNPC3 gene. This alteration results from a A to G substitution at nucleotide position 146, causing the tyrosine (Y) at amino acid position 49 to be replaced by a cysteine (C). 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

0.49

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.022

.;T;T;T

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.93

D;D;.;D

M_CAP

Benign

0.014

MetaRNN

Uncertain

0.54

D;D;D;D

MetaSVM

Benign

-1.1

PrimateAI

Uncertain

0.76

PROVEAN

Uncertain

-3.6

D;D;D;D

REVEL

Benign

0.23

Sift

Benign

0.18

T;T;T;T

Sift4G

Benign

0.20

T;T;T;T

Polyphen

1.0

.;.;D;D

Vest4

0.49

MutPred

0.45

Gain of methylation at K48 (P = 0.0308);Gain of methylation at K48 (P = 0.0308);Gain of methylation at K48 (P = 0.0308);Gain of methylation at K48 (P = 0.0308);

MVP

0.18

MPC

0.11

ClinPred

0.96

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.40

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over