12-55492458-G-T

Position:

• chr12-55492458-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001005519.2(OR6C68):​c.81G>T​(p.Met27Ile) 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 Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: OR6C68 NM_001005519.2 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -9.60

Genes affected

OR6C68 (HGNC:31297): (olfactory receptor family 6 subfamily C member 68) 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 seven-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, Mar 2014]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.02294594).
• BP6: Variant 12-55492458-G-T is Benign according to our data. Variant chr12-55492458-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 2556179.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR6C68	NM_001005519.2	c.81G>T	p.Met27Ile	missense_variant	1/1	ENST00000548615.1	NP_001005519.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR6C68	ENST00000548615.1	c.81G>T	p.Met27Ile	missense_variant	1/1		NM_001005519.2	ENSP00000448811	P1
	ENST00000556750.5	n.125+633C>A		intron_variant, non_coding_transcript_variant		2
	ENST00000554049.1	n.89+633C>A		intron_variant, non_coding_transcript_variant		2
	ENST00000555138.1	n.125+633C>A		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 02, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.81
CADD	Benign	0.0010
DANN	Benign	0.58
DEOGEN2	Benign	0.0014	T
Eigen	Benign	-2.8
Eigen_PC	Benign	-2.9
FATHMM_MKL	Benign	0.0020	N
LIST_S2	Benign	0.44	T
M_CAP	Benign	0.00052	T
MetaRNN	Benign	0.023	T
MetaSVM	Benign	-0.86	T
MutationAssessor	Benign	-1.4	N
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.19	T
PROVEAN	Benign	1.4	N
REVEL	Benign	0.033
Sift	Benign	1.0	T
Sift4G	Benign	0.84	T
Polyphen		0.0	B
Vest4		0.047
MutPred		0.29		Gain of catalytic residue at Q22 (P = 0.021);
MVP		0.040
MPC		0.0053
ClinPred		0.081	T
GERP RS		-9.5
Varity_R		0.088
gMVP		0.045

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr12-55886242;