10-70260701-A-C

Variant summary

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

The NM_022146.5(NPFFR1):c.361T>G(p.Leu121Val) 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. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Failed GnomAD Quality Control
• Consequence: NPFFR1 NM_022146.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.10

Genes affected

NPFFR1 (HGNC:17425): (neuropeptide FF receptor 1) Predicted to enable G protein-coupled receptor activity and peptide binding activity. Predicted to be involved in G protein-coupled receptor signaling pathway. Located in cilium. [provided by Alliance of Genome Resources, Apr 2022]

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=0.3961811).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NPFFR1	NM_022146.5	c.361T>G	p.Leu121Val	missense_variant	3/4	ENST00000277942.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NPFFR1	ENST00000277942.7	c.361T>G	p.Leu121Val	missense_variant	3/4	5	NM_022146.5	P1

Frequencies

GnomAD3 genomes AF: 0.00 AC: 1 AN: 152160 Hom.: 0 Cov.: 32 FAILED QC

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000657 AC: 1 AN: 152160 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74336

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

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

Mar 08, 2024

The c.361T>G (p.L121V) alteration is located in exon 3 (coding exon 3) of the NPFFR1 gene. This alteration results from a T to G substitution at nucleotide position 361, causing the leucine (L) at amino acid position 121 to be replaced by a valine (V). 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	0.23
BayesDel_addAF	Benign	-0.093	T
BayesDel_noAF	Benign	-0.37
Cadd	Benign	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.013	T
Eigen	Uncertain	0.23
Eigen_PC	Benign	0.15
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.40	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.26
Sift	Benign	0.073	T
Sift4G	Benign	0.26	T
Polyphen		0.99	D
Vest4		0.45
MutPred		0.57		Gain of methylation at K117 (P = 0.0649);
MVP		0.69
MPC		0.20
ClinPred		0.52	D
GERP RS		0.92
Varity_R		0.24
gMVP		0.77

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: rs1840623717; hg19: chr10-72020457;