X-70200269-T-G

Position:

• chrX-70200269-T-G

Variant summary

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

The NM_198512.3(DGAT2L6):​c.282T>G​(p.His94Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000182 in 1,097,740 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0000018 (0 hom. 0 hem.)
• Consequence: DGAT2L6 NM_198512.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.221

Genes affected

DGAT2L6 (HGNC:23250): (diacylglycerol O-acyltransferase 2 like 6) This gene is a member of the diacylglycerol acyltransferase 2 family. The encoded protein is a putative acyltransferase and is most likely involved in the synthesis of di- or triacylglycerol, however its substrate specificity is currently unknown. [provided by RefSeq, Feb 2015]

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=0.18333283).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DGAT2L6	NM_198512.3	c.282T>G	p.His94Gln	missense_variant	4/7	ENST00000333026.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DGAT2L6	ENST00000333026.4	c.282T>G	p.His94Gln	missense_variant	4/7	1	NM_198512.3	P1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome AF: 0.00000182 AC: 2 AN: 1097740 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 363112

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: 0.0000434

GnomAD4 genome Cov.: 22

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

Jul 14, 2023

The c.282T>G (p.H94Q) alteration is located in exon 4 (coding exon 4) of the DGAT2L6 gene. This alteration results from a T to G substitution at nucleotide position 282, causing the histidine (H) at amino acid position 94 to be replaced by a glutamine (Q). 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	0.19
BayesDel_addAF	Benign	-0.068	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	16
DANN	Benign	0.86
DEOGEN2	Benign	0.050	T
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.54	T
M_CAP	Benign	0.073	D
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.40	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	0.89	D
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.19
Sift	Benign	0.34	T
Sift4G	Benign	0.46	T
Polyphen		0.031	B
Vest4		0.17
MutPred		0.43		Loss of catalytic residue at L96 (P = 0.0598);
MVP		0.78
MPC		0.026
ClinPred		0.12	T
GERP RS		-0.068
Varity_R		0.12
gMVP		0.53

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: chrX-69420119;