chr3-98132752-T-C

Position:

• chr3-98132752-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001005338.2(OR5H1):​c.55T>C​(p.Tyr19His) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: OR5H1 NM_001005338.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.120

Genes affected

OR5H1 (HGNC:8346): (olfactory receptor family 5 subfamily H member 1) Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome. The nomenclature assigned to the olfactory receptor genes and proteins for this organism is independent of other organisms. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.062144905).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR5H1	NM_001005338.2	c.55T>C	p.Tyr19His	missense_variant	2/2	ENST00000641874.1	NP_001005338.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR5H1	ENST00000641874.1	c.55T>C	p.Tyr19His	missense_variant	2/2		NM_001005338.2	ENSP00000492953	P1
	ENST00000508964.1	n.94+15289A>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461084 Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1 AN XY: 726840

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: 0.00

Gnomad4 OTH exome AF: 0.0000166

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

Nov 10, 2022

The c.55T>C (p.Y19H) alteration is located in exon 1 (coding exon 1) of the OR5H1 gene. This alteration results from a T to C substitution at nucleotide position 55, causing the tyrosine (Y) at amino acid position 19 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	Benign	0.086
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.86
DANN	Benign	0.79
DEOGEN2	Benign	0.0021	T;T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.0075	N
LIST_S2	Benign	0.020	.;T
M_CAP	Benign	0.00062	T
MetaRNN	Benign	0.062	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.86	N;N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.22	T
PROVEAN	Benign	1.1	.;N
REVEL	Benign	0.021
Sift	Benign	0.18	.;T
Sift4G	Benign	0.16	.;T
Polyphen		0.0020	B;B
Vest4		0.064
MutPred		0.47		Loss of catalytic residue at L14 (P = 0.0673);Loss of catalytic residue at L14 (P = 0.0673);
MVP		0.27
MPC		0.32
ClinPred		0.062	T
GERP RS		-2.2
Varity_R		0.030
gMVP		0.24

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs942126597; hg19: chr3-97851596;