12-122702374-A-G

Variant names:

• chr12-122702374-A-G
• rs1296681455
• NM_177551.4:c.910T>C
• HCAR2 p.Phe304Leu

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_177551.4(HCAR2):​c.910T>C​(p.Phe304Leu) 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. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: HCAR2 NM_177551.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.64
• Publications: 0 publications found

Genes affected

HCAR2 (HGNC:24827): (hydroxycarboxylic acid receptor 2) Predicted to enable nicotinic acid receptor activity. Involved in neutrophil apoptotic process and positive regulation of neutrophil apoptotic process. Located in cell junction and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000256249 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.095991105).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_177551.4. 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
	HCAR2	NM_177551.4	MANE Select	c.910T>C	p.Phe304Leu	missense	Exon 1 of 1	NP_808219.1	Q8TDS4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HCAR2	ENST00000328880.6	TSL:6 MANE Select	c.910T>C	p.Phe304Leu	missense	Exon 1 of 1	ENSP00000375066.2	Q8TDS4
	ENSG00000256249	ENST00000543611.1	TSL:4	n.401+1044A>G		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251472 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000462

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.73
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	23
DANN	Benign	0.97
DEOGEN2	Benign	0.049	T
Eigen	Benign	-0.40
Eigen_PC	Benign	-0.25
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.59	T
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.096	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.3	M
PhyloP100		1.6
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-0.35	N
REVEL	Benign	0.037
Sift	Benign	0.17	T
Sift4G	Benign	0.90	T
Varity_R		0.063
gMVP		0.32
Mutation Taster		=79/21	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1296681455; hg19: chr12-123186921;