Genetic Variant NM_016321.3:c.1255C>T (chr15-89476811-G-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_016321.3(RHCG):c.1255C>T(p.Pro419Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,766 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RHCG
NM_016321.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.63

Publications

0 publications found

Variant links:

Genes affected

RHCG (HGNC:18140): (Rh family C glycoprotein) Enables ammonium transmembrane transporter activity; ankyrin binding activity; and identical protein binding activity. Involved in ammonium transmembrane transport; cellular ion homeostasis; and transepithelial ammonium transport. Located in apical plasma membrane and basolateral plasma membrane. Is integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

RHCG links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.837

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016321.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RHCG	NM_016321.3	MANE Select	c.1255C>T	p.Pro419Ser	missense	Exon 9 of 11	NP_057405.1	Q9UBD6
RHCG	NM_001321041.2		c.1255C>T	p.Pro419Ser	missense	Exon 9 of 11	NP_001307970.1	Q9UBD6
RHCG	NR_110261.2		n.1218C>T		non_coding_transcript_exon	Exon 9 of 11

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RHCG	ENST00000268122.9	TSL:1 MANE Select	c.1255C>T	p.Pro419Ser	missense	Exon 9 of 11	ENSP00000268122.4	Q9UBD6
RHCG	ENST00000560081.5	TSL:1	n.*183C>T		non_coding_transcript_exon	Exon 9 of 11	ENSP00000453588.1	H0YMF8
RHCG	ENST00000560081.5	TSL:1	n.*183C>T		3_prime_UTR	Exon 9 of 11	ENSP00000453588.1	H0YMF8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727186

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111924

Other (OTH)

AF:

0.00

AC:

AN:

60386

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

0.0041

BayesDel_noAF

Benign

-0.23

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

M_CAP

Uncertain

0.091

MetaRNN

Pathogenic

0.84

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.4

PhyloP100

7.6

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-6.7

REVEL

Uncertain

0.32

Sift

Uncertain

0.011

Sift4G

Benign

0.085

Polyphen

0.77

Vest4

0.74

MutPred

0.63

Gain of relative solvent accessibility (P = 0.09)

MVP

0.71

MPC

0.81

ClinPred

0.99

GERP RS

5.7

Varity_R

0.63

gMVP

0.85

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over