1-155941932-C-T

Position:

• chr1-155941932-C-T

Variant summary

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

The NM_181885.3(RXFP4):​c.223C>T​(p.Pro75Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,880 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RXFP4 NM_181885.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.65

Genes affected

RXFP4 (HGNC:14666): (relaxin family peptide/INSL5 receptor 4) GPR100 is a member of the rhodopsin family of G protein-coupled receptors (GPRs) (Fredriksson et al., 2003 [PubMed 14623098]).[supplied by OMIM, Mar 2008]

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=0.06333864).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RXFP4	NM_181885.3	c.223C>T	p.Pro75Ser	missense_variant	1/1	ENST00000368318.5	NP_871001.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RXFP4	ENST00000368318.5	c.223C>T	p.Pro75Ser	missense_variant	1/1	6	NM_181885.3	ENSP00000357301.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461880 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727238

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.0000166

GnomAD4 genome Cov.: 33

Asia WGS AF: 0.000577 AC: 2 AN: 3478

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

Jun 30, 2023

The c.223C>T (p.P75S) alteration is located in exon 1 (coding exon 1) of the RXFP4 gene. This alteration results from a C to T substitution at nucleotide position 223, causing the proline (P) at amino acid position 75 to be replaced by a serine (S). 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	0.13
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	13
DANN	Benign	0.85
DEOGEN2	Benign	0.0053	T
Eigen	Benign	-0.97
Eigen_PC	Benign	-0.81
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.37	T
M_CAP	Benign	0.0017	T
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	-1.4	N
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	2.2	N
REVEL	Benign	0.054
Sift	Benign	0.48	T
Sift4G	Benign	0.89	T
Polyphen		0.0030	B
Vest4		0.21
MutPred		0.55		Loss of catalytic residue at P74 (P = 0.0193);
MVP		0.36
MPC		0.24
ClinPred		0.12	T
GERP RS		2.2
Varity_R		0.023
gMVP		0.23

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

Other links and lift over

dbSNP: rs377552488; hg19: chr1-155911723;