9-5304420-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_134441.3(RLN2):c.161A>T(p.Lys54Ile) 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. 13/21 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)
  • Exomes 𝑓: 0.0000068 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RLN2 NM_134441.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.75

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 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.42040837).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RLN2	NM_134441.3	c.161A>T	p.Lys54Ile	missense_variant	1/2	ENST00000381627.4
RLN2	NM_005059.4	c.161A>T	p.Lys54Ile	missense_variant	1/3
RLN2	XM_047423707.1	c.113A>T	p.Lys38Ile	missense_variant	4/5
RLN2	XM_047423709.1	c.-45+1253A>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RLN2	ENST00000381627.4	c.161A>T	p.Lys54Ile	missense_variant	1/2	1	NM_134441.3	P1
RLN2	ENST00000416837.1	c.14A>T	p.Lys5Ile	missense_variant	1/3	3

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000684 AC: 10 AN: 1461476 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727058

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: 0.00000899

Gnomad4 OTH exome AF: 0.00

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

Feb 26, 2024

The c.161A>T (p.K54I) alteration is located in exon 1 (coding exon 1) of the RLN2 gene. This alteration results from a A to T substitution at nucleotide position 161, causing the lysine (K) at amino acid position 54 to be replaced by an isoleucine (I). 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	0.46
BayesDel_addAF	Benign	-0.0018	T
BayesDel_noAF	Benign	-0.24
CADD	Benign	11
DANN	Benign	0.64
DEOGEN2	Uncertain	0.58	D
Eigen	Benign	-0.89
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.50	T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.42	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	2.0	M
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.29	T
PROVEAN	Pathogenic	-4.8	D
REVEL	Uncertain	0.30
Sift	Uncertain	0.014	D
Sift4G	Uncertain	0.017	D
Polyphen		0.99	D
Vest4		0.25
MutPred		0.60		Loss of methylation at K54 (P = 0.0116);
MVP		0.51
MPC		0.22
ClinPred		0.86	D
GERP RS		-1.0
Varity_R		0.48
gMVP		0.24

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-5304420;