19-16893143-C-A

Variant names:

• chr19-16893143-C-A
• rs748502943
• NM_015692.5:c.5623G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_015692.5(CPAMD8):​c.5623G>T​(p.Gly1875Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000142 in 1,405,952 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/17 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. G1875S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CPAMD8 NM_015692.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.78
• Publications: 0 publications found

Genes affected

CPAMD8 (HGNC:23228): (C3 and PZP like alpha-2-macroglobulin domain containing 8) This gene encodes a member of the protease inhibitor I39 (alpha-2-macroglobulin) family of proteins. These proteins are important in innate and acquired immunity. The encoded protein is membrane-associated and proteolytically processed to generate two chains. Mutations in this gene cause a form of anterior segment dysgenesis, a developmental disorder of the eye. [provided by RefSeq, May 2017]

CPAMD8 Gene-Disease associations (from GenCC):

• anterior segment dysgenesis 8

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.0527893).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015692.5. 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
	CPAMD8	NM_015692.5	MANE Select	c.5623G>T	p.Gly1875Cys	missense	Exon 42 of 42	NP_056507.3	Q8IZJ3-1
	CPAMD8	NR_147452.2		n.1533G>T		non_coding_transcript_exon	Exon 3 of 3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPAMD8	ENST00000443236.7	TSL:1 MANE Select	c.5623G>T	p.Gly1875Cys	missense	Exon 42 of 42	ENSP00000402505.3	Q8IZJ3-1
	CPAMD8	ENST00000942844.1		c.5587G>T	p.Gly1863Cys	missense	Exon 42 of 42	ENSP00000612903.1
	CPAMD8	ENST00000651564.2		c.*1273G>T		3_prime_UTR	Exon 42 of 42	ENSP00000498697.2	Q8IZJ3-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000846 AC: 2 AN: 236336 AF XY: 0.0000155

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: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000142 AC: 2 AN: 1405952 Hom.: 0 Cov.: 24 AF XY: 0.00000285 AC XY: 2 AN XY: 701696

African (AFR) AF: 0.00 AC: 0 AN: 32456

American (AMR) AF: 0.00 AC: 0 AN: 44008

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25642

East Asian (EAS) AF: 0.00 AC: 0 AN: 39336

South Asian (SAS) AF: 0.0000237 AC: 2 AN: 84476

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53000

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5680

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1062928

Other (OTH) AF: 0.00 AC: 0 AN: 58426

GnomAD4 genome Cov.: 33

ExAC AF: 0.0000166 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.39	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	6.3
DANN	Benign	0.92
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.035	N
LIST_S2	Benign	0.40	T
M_CAP	Benign	0.0027	T
MetaRNN	Benign	0.053	T
MetaSVM	Benign	-1.0	T
PhyloP100		-1.8
PrimateAI	Benign	0.24	T
Sift4G	Pathogenic	0.0	D
Vest4		0.13
MVP		0.099
MPC		0.14
ClinPred		0.065	T
GERP RS		-1.9
Mutation Taster		=98/2	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs748502943; hg19: chr19-17003954;