4-163325897-A-G

Position:

• chr4-163325897-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000909.6(NPY1R):​c.658T>C​(p.Tyr220His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPY1R NM_000909.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.11

Genes affected

NPY1R (HGNC:7956): (neuropeptide Y receptor Y1) This gene belongs to the G-protein-coupled receptor superfamily. The encoded transmembrane protein mediates the function of neuropeptide Y (NPY), a neurotransmitter, and peptide YY (PYY), a gastrointestinal hormone. The encoded receptor undergoes fast agonist-induced internalization through clathrin-coated pits and is subsequently recycled back to the cell membrane. Activation of Y1 receptors may result in mobilization of intracellular calcium and inhibition of adenylate cyclase activity. [provided by RefSeq, Aug 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.882

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NPY1R	NM_000909.6	c.658T>C	p.Tyr220His	missense_variant	2/3	ENST00000296533.3
NPY1R	XM_005263031.5	c.658T>C	p.Tyr220His	missense_variant	2/3
NPY1R	XM_011532010.4	c.658T>C	p.Tyr220His	missense_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NPY1R	ENST00000296533.3	c.658T>C	p.Tyr220His	missense_variant	2/3	1	NM_000909.6	P1
NPY1R	ENST00000512819.1	c.124T>C	p.Tyr42His	missense_variant	3/4	4
NPY1R	ENST00000504391.5	c.-72T>C		5_prime_UTR_variant	4/5	5
NPY1R	ENST00000509586.5	c.-72T>C		5_prime_UTR_variant	3/4	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Jan 18, 2022

The c.658T>C (p.Y220H) alteration is located in exon 2 (coding exon 1) of the NPY1R gene. This alteration results from a T to C substitution at nucleotide position 658, causing the tyrosine (Y) at amino acid position 220 to be replaced by a histidine (H). 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	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T;.
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Uncertain	0.19	D
MetaRNN	Pathogenic	0.88	D;D
MetaSVM	Uncertain	0.74	D
MutationAssessor	Pathogenic	3.7	H;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-4.8	D;D
REVEL	Pathogenic	0.83
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;.
Polyphen		1.0	D;.
Vest4		0.82
MutPred		0.58		Loss of catalytic residue at L215 (P = 0.0937);.;
MVP		0.81
MPC		1.8
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.94
gMVP		0.88

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: chr4-164247049;