4-72128916-G-A

Position:

• chr4-72128916-G-A

Variant summary

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

The NM_004885.3(NPFFR2):​c.325G>A​(p.Ala109Thr) 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. 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: 30)
• Consequence: NPFFR2 NM_004885.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.63

Genes affected

NPFFR2 (HGNC:4525): (neuropeptide FF receptor 2) This gene encodes a member of a subfamily of G-protein-coupled neuropeptide receptors. This protein is activated by the neuropeptides A-18-amide (NPAF) and F-8-amide (NPFF) and may function in pain modulation and regulation of the opioid system. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2009]

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=0.11001626).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPFFR2	NM_004885.3	c.325G>A	p.Ala109Thr	missense_variant	2/4	ENST00000308744.12	NP_004876.3
NPFFR2	NM_001144756.2	c.334G>A	p.Ala112Thr	missense_variant	3/5		NP_001138228.1
NPFFR2	NM_053036.3	c.325G>A	p.Ala109Thr	missense_variant	2/4		NP_444264.1
NPFFR2	XM_011531554.3	c.305-9124G>A		intron_variant			XP_011529856.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPFFR2	ENST00000308744.12	c.325G>A	p.Ala109Thr	missense_variant	2/4	1	NM_004885.3	ENSP00000307822.7
NPFFR2	ENST00000395999.5	c.334G>A	p.Ala112Thr	missense_variant	3/5	1		ENSP00000379321.1
NPFFR2	ENST00000358749.3	c.325G>A	p.Ala109Thr	missense_variant	2/4	1		ENSP00000351599.3
NPFFR2	ENST00000344413.6	c.-20-9124G>A		intron_variant		1		ENSP00000340789.6

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 30

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

Dec 05, 2022

The c.631G>A (p.A211T) alteration is located in exon 2 (coding exon 2) of the NPFFR2 gene. This alteration results from a G to A substitution at nucleotide position 631, causing the alanine (A) at amino acid position 211 to be replaced by a threonine (T). 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	0.11
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	16
DANN	Benign	0.90
DEOGEN2	Benign	0.0049	T;.;.
Eigen	Benign	-0.42
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Benign	0.74	T;T;T
M_CAP	Benign	0.0029	T
MetaRNN	Benign	0.11	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.47	N;.;.
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	1.9	N;N;N
REVEL	Benign	0.11
Sift	Benign	1.0	T;T;T
Sift4G	Benign	1.0	T;.;T
Polyphen		0.050	B;B;.
Vest4		0.15
MutPred		0.40		Gain of glycosylation at A211 (P = 0.0197);.;.;
MVP		0.50
MPC		0.042
ClinPred		0.42	T
GERP RS		5.8
Varity_R		0.090
gMVP		0.46

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-72994633;