8-166172-C-T

Variant names:

• chr8-166172-C-T
• rs1368988913
• NM_001005504.1:c.853G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001005504.1(OR4F21):​c.853G>A​(p.Val285Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 2)
  • Exomes 𝑓: 0.0000073 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: OR4F21 NM_001005504.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.25
• Publications: 0 publications found

Genes affected

OR4F21 (HGNC:19583): (olfactory receptor family 4 subfamily F member 21) 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]

ENSG00000292979 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.072315365).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001005504.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR4F21	NM_001005504.1	MANE Select	c.853G>A	p.Val285Ile	missense	Exon 1 of 1	NP_001005504.1	O95013

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR4F21	ENST00000320901.4	TSL:6 MANE Select	c.853G>A	p.Val285Ile	missense	Exon 1 of 1	ENSP00000318878.3	O95013
	ENSG00000292979	ENST00000805562.1		n.115+65957G>A		intron	N/A
	ENSG00000292979	ENST00000805563.1		n.136+66804G>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 2

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000731 AC: 2 AN: 273602 Hom.: 0 Cov.: 0 AF XY: 0.00000681 AC XY: 1 AN XY: 146876

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 10534

American (AMR) AF: 0.00 AC: 0 AN: 11388

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 8084

East Asian (EAS) AF: 0.00 AC: 0 AN: 14920

South Asian (SAS) AF: 0.00 AC: 0 AN: 29954

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 16868

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1138

European-Non Finnish (NFE) AF: 0.0000121 AC: 2 AN: 165100

Other (OTH) AF: 0.00 AC: 0 AN: 15616

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 2

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.081
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	12
DANN	Benign	0.61
DEOGEN2	Benign	0.0054	T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.76
FATHMM_MKL	Benign	0.0079	N
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.00072	T
MetaRNN	Benign	0.072	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.29	N
PhyloP100		-1.3
PrimateAI	Benign	0.23	T
PROVEAN	Benign	-0.69	N
REVEL	Benign	0.030
Sift	Benign	0.38	T
Sift4G	Benign	0.76	T
Polyphen		0.0080	B
Vest4		0.081
MutPred		0.35		Gain of catalytic residue at V286 (P = 0.1002)
MVP		0.055
ClinPred		0.16	T
GERP RS		2.0
Varity_R		0.023
gMVP		0.026
Mutation Taster		=99/1	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1368988913; hg19: chr8-116172;