chr18-57435951-C-T

Position:

• chr18-57435951-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004852.3(ONECUT2):​c.235C>T​(p.Arg79Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000254 in 1,179,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000025 (0 hom.)
• Consequence: ONECUT2 NM_004852.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.788

Genes affected

ONECUT2 (HGNC:8139): (one cut homeobox 2) This gene encodes a member of the onecut family of transcription factors, which are characterized by a cut domain and an atypical homeodomain. The protein binds to specific DNA sequences and stimulates expression of target genes, including genes involved in melanocyte and hepatocyte differentiation. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22126934).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ONECUT2	NM_004852.3	c.235C>T	p.Arg79Trp	missense_variant	1/2	ENST00000491143.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ONECUT2	ENST00000491143.3	c.235C>T	p.Arg79Trp	missense_variant	1/2	1	NM_004852.3	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000254 AC: 3 AN: 1179848 Hom.: 0 Cov.: 34 AF XY: 0.00000176 AC XY: 1 AN XY: 568166

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: 0.00000306

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

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

Dec 06, 2023

The c.235C>T (p.R79W) alteration is located in exon 1 (coding exon 1) of the ONECUT2 gene. This alteration results from a C to T substitution at nucleotide position 235, causing the arginine (R) at amino acid position 79 to be replaced by a tryptophan (W). 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	0.33
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.20	T
Eigen	Benign	-0.31
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.70	T
M_CAP	Uncertain	0.16	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	0.97	D;D
PrimateAI	Pathogenic	0.88	D
REVEL	Benign	0.092
Sift4G	Benign	0.22	T
Polyphen		0.97	D
Vest4		0.23
MutPred		0.21		Loss of methylation at R79 (P = 0.009);
MVP		0.19
MPC		0.89
ClinPred		0.90	D
GERP RS		2.3
Varity_R		0.13
gMVP		0.36

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: chr18-55103183;