9-5304519-C-T

Position:

• chr9-5304519-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_134441.3(RLN2):​c.62G>A​(p.Arg21Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 28)
• Consequence: RLN2 NM_134441.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.399

Genes affected

RLN2 (HGNC:10027): (relaxin 2) This gene encodes a member of the relaxin subfamily and insulin superfamily of peptide hormones. In humans there are three non-allelic relaxin genes. This gene encodes multiple protein isoforms, at least one of which undergoes proteolytic processing. This processing generates relaxin A and B chains that are linked by disulfide bonds to form the mature peptide hormone. This hormone plays a role in the male and female reproductive systems and was initially noted for its role in pregnancy. This protein also plays broader roles in the cardiovascular system, including in the regulation of blood pressure and control of heart rate, and data from animal models shows that this protein may have anti-fibrotic and cardioprotective effects. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.108337134).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RLN2	NM_134441.3	c.62G>A	p.Arg21Lys	missense_variant	1/2	ENST00000381627.4	NP_604390.1
RLN2	XM_047423707.1	c.15-1G>A		splice_acceptor_variant			XP_047279663.1
RLN2	NM_005059.4	c.62G>A	p.Arg21Lys	missense_variant	1/3		NP_005050.2
RLN2	XM_047423709.1	c.-45+1154G>A		intron_variant			XP_047279665.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RLN2	ENST00000381627.4	c.62G>A	p.Arg21Lys	missense_variant	1/2	1	NM_134441.3	ENSP00000371040	P1

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 28

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

May 13, 2024

The c.62G>A (p.R21K) alteration is located in exon 1 (coding exon 1) of the RLN2 gene. This alteration results from a G to A substitution at nucleotide position 62, causing the arginine (R) at amino acid position 21 to be replaced by a lysine (K). 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	0.14
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	8.4
DANN	Benign	0.83
DEOGEN2	Benign	0.022	T
Eigen	Benign	-0.77
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.043	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.7	L
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.062
Sift	Benign	0.40	T
Sift4G	Benign	0.69	T
Polyphen		0.45	B
Vest4		0.056
MutPred		0.53		Loss of solvent accessibility (P = 0.0219);
MVP		0.49
MPC		0.38
ClinPred		0.33	T
GERP RS		1.2
Varity_R		0.12
gMVP		0.20

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr9-5304519;