16-77284058-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_199355.4(ADAMTS18):c.3564C>T(p.Cys1188=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000441 in 1,610,970 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000046 (0 hom.)
• Consequence: ADAMTS18 NM_199355.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.05

Genes affected

ADAMTS18 (HGNC:17110): (ADAM metallopeptidase with thrombospondin type 1 motif 18) This gene encodes a member of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) protein family. ADAMTS family members share several distinct protein modules, including a propeptide region, a metalloproteinase domain, a disintegrin-like domain, and a thrombospondin type 1 (TS) motif. Individual members of this family differ in the number of C-terminal TS motifs, and some have unique C-terminal domains. The encoded preproprotein is proteolytically processed to generate the mature protein, which may regulate hemostatic balance and function as a tumor suppressor. Mutations in this gene may be associated with microcornea, myopic chorioretinal atrophy, and telecanthus (MMCAT) and cone-rod dystrophy in human patients. [provided by RefSeq, May 2016]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.45).
• BP6: Variant 16-77284058-G-A is Benign according to our data. Variant chr16-77284058-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1092732.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.05 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ADAMTS18	NM_199355.4	c.3564C>T	p.Cys1188=	synonymous_variant	23/23	ENST00000282849.10
ADAMTS18	NM_001326358.2	c.3048C>T	p.Cys1016=	synonymous_variant	23/23
ADAMTS18	XM_047433672.1	c.2835C>T	p.Cys945=	synonymous_variant	19/19
ADAMTS18	XM_047433673.1	c.2328C>T	p.Cys776=	synonymous_variant	17/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADAMTS18	ENST00000282849.10	c.3564C>T	p.Cys1188=	synonymous_variant	23/23	1	NM_199355.4	P1
	ENST00000561672.1	n.74-5218G>A		intron_variant, non_coding_transcript_variant		2
ADAMTS18	ENST00000562332.1	c.96+5206C>T		intron_variant		2

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 151964 Hom.: 0 Cov.: 31

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: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000558 AC: 14 AN: 250726 Hom.: 0 AF XY: 0.0000517 AC XY: 7 AN XY: 135470

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000545

Gnomad SAS exome AF: 0.0000653

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000530

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000459 AC: 67 AN: 1458894 Hom.: 0 Cov.: 29 AF XY: 0.0000441 AC XY: 32 AN XY: 725958

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000756

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000442

Gnomad4 OTH exome AF: 0.0000498

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152076 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74340

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000947 Hom.: 0

Bravo AF: 0.0000227

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jun 16, 2023

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.45
Cadd	Benign	4.7
Dann	Benign	0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs773750920; hg19: chr16-77317955; COSMIC: COSV51413476;