16-66908438-T-C

Variant names:

• chr16-66908438-T-C
• NM_004062.4:c.2444A>G

Variant summary

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

The NM_004062.4(CDH16):​c.2444A>G​(p.Asp815Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,762 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CDH16 NM_004062.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.36

Genes affected

CDH16 (HGNC:1755): (cadherin 16) This gene is a member of the cadherin superfamily, genes encoding calcium-dependent, membrane-associated glycoproteins. Mapped to a previously identified cluster of cadherin genes on chromosome 16q22.1, the gene localizes with superfamily members CDH1, CDH3, CDH5, CDH8 and CDH11. The protein consists of an extracellular domain containing 6 cadherin domains, a transmembrane region and a truncated cytoplasmic domain but lacks the prosequence and tripeptide HAV adhesion recognition sequence typical of most classical cadherins. Expression is exclusively in kidney, where the protein functions as the principal mediator of homotypic cellular recognition, playing a role in the morphogenic direction of tissue development. Alternatively spliced transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2011]

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=0.19539401).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDH16	NM_004062.4	c.2444A>G	p.Asp815Gly	missense_variant	Exon 18 of 18	ENST00000299752.9	NP_004053.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDH16	ENST00000299752.9	c.2444A>G	p.Asp815Gly	missense_variant	Exon 18 of 18	1	NM_004062.4	ENSP00000299752.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461762 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727192

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 29, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2444A>G (p.D815G) alteration is located in exon 18 (coding exon 17) of the CDH16 gene. This alteration results from a A to G substitution at nucleotide position 2444, causing the aspartic acid (D) at amino acid position 815 to be replaced by a glycine (G). 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	0.094
BayesDel_addAF	Benign	-0.060	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.048	.;T;.;T;.
Eigen	Benign	0.10
Eigen_PC	Benign	0.14
FATHMM_MKL	Uncertain	0.79	D
LIST_S2	Uncertain	0.86	D;D;D;D;D
M_CAP	Benign	0.042	D
MetaRNN	Benign	0.20	T;T;T;T;T
MetaSVM	Benign	-0.82	T
MutationAssessor	Uncertain	2.1	.;M;.;.;.
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-1.8	N;N;N;N;N
REVEL	Benign	0.065
Sift	Uncertain	0.011	D;D;D;D;D
Sift4G	Uncertain	0.042	D;D;D;D;D
Polyphen		0.90	P;P;.;.;.
Vest4		0.23
MutPred		0.22		.;Gain of sheet (P = 0.0477);.;.;.;
MVP		0.76
MPC		0.19
ClinPred		0.66	D
GERP RS		4.9
Varity_R		0.18
gMVP		0.25

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: chr16-66942341;