15-35373549-C-A

Variant names:

• chr15-35373549-C-A
• rs764647898
• NM_080650.4:c.722G>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_080650.4(DPH6):​c.722G>T​(p.Arg241Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,607,200 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 variant affecting the same amino acid position, but resulting in a different missense (i.e. R241H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: DPH6 NM_080650.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.87
• Publications: 3 publications found

Genes affected

DPH6 (HGNC:30543): (diphthamine biosynthesis 6) Enables diphthine-ammonia ligase activity. Predicted to be involved in peptidyl-diphthamide biosynthetic process from peptidyl-histidine. Located in nucleolus and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29874313).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_080650.4. 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
	DPH6	NM_080650.4	MANE Select	c.722G>T	p.Arg241Leu	missense	Exon 8 of 9	NP_542381.1	Q7L8W6-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DPH6	ENST00000256538.9	TSL:1 MANE Select	c.722G>T	p.Arg241Leu	missense	Exon 8 of 9	ENSP00000256538.4	Q7L8W6-1
	DPH6	ENST00000560386.5	TSL:1	n.172G>T		non_coding_transcript_exon	Exon 3 of 4
	DPH6	ENST00000896513.1		c.716G>T	p.Arg239Leu	missense	Exon 8 of 9	ENSP00000566572.1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151910 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000406 AC: 1 AN: 246278 AF XY: 0.00000750

Gnomad AFR exome AF: 0.0000627

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455290 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 723974

⚠️ 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: 33114

American (AMR) AF: 0.00 AC: 0 AN: 43662

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25912

East Asian (EAS) AF: 0.00 AC: 0 AN: 39362

South Asian (SAS) AF: 0.00 AC: 0 AN: 85200

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53350

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5718

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1108860

Other (OTH) AF: 0.0000166 AC: 1 AN: 60112

⚠️ 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 AF: 0.00000658 AC: 1 AN: 151910 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74182

African (AFR) AF: 0.0000242 AC: 1 AN: 41390

American (AMR) AF: 0.00 AC: 0 AN: 15222

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3464

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10602

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67910

Other (OTH) AF: 0.00 AC: 0 AN: 2078

Alfa AF: 0.0000165 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.35
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.081	T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.039
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	2.0	M
PhyloP100		2.9
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-4.3	D
REVEL	Benign	0.17
Sift	Benign	0.14	T
Sift4G	Benign	0.26	T
Polyphen		0.0050	B
Vest4		0.64
MutPred		0.59		Gain of helix (P = 0.062)
MVP		0.31
MPC		0.23
ClinPred		0.95	D
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.20
gMVP		0.78
Mutation Taster		=64/36	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.13		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: rs764647898; hg19: chr15-35665750;