16-68801883-C-T

Variant names:

• chr16-68801883-C-T
• rs746703615
• NM_004360.5:c.377C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BS2_Supporting

The NM_001317185.2(CDH1):​c.-1239C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000186 in 1,613,478 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 Conflicting classifications of pathogenicity (no stars). The gene CDH1 is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: CDH1 NM_001317185.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:11 B:2
• Conservation: PhyloP100: 0.200
• Publications: 9 publications found

Genes affected

CDH1 (HGNC:1748): (cadherin 1) This gene encodes a classical cadherin of the cadherin superfamily. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate the mature glycoprotein. This calcium-dependent cell-cell adhesion protein is comprised of five extracellular cadherin repeats, a transmembrane region and a highly conserved cytoplasmic tail. Mutations in this gene are correlated with gastric, breast, colorectal, thyroid and ovarian cancer. Loss of function of this gene is thought to contribute to cancer progression by increasing proliferation, invasion, and/or metastasis. The ectodomain of this protein mediates bacterial adhesion to mammalian cells and the cytoplasmic domain is required for internalization. This gene is present in a gene cluster with other members of the cadherin family on chromosome 16. [provided by RefSeq, Nov 2015]

CDH1 Gene-Disease associations (from GenCC):

• blepharocheilodontic syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, Illumina
• CDH1-related diffuse gastric and lobular breast cancer syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
• hereditary breast carcinoma

  Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
• hereditary diffuse gastric adenocarcinoma

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• cleft soft palate

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• orofacial cleft 3

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• blepharocheilodontic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• familial ovarian cancer

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Specifications for CDH1 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.07634199).
• BS2: High AC in GnomAd4 at 5 Unknown,AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001317185.2. 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
	CDH1	NM_004360.5	MANE Select	c.377C>T	p.Pro126Leu	missense	Exon 3 of 16	NP_004351.1	A0A0U2ZQU7
	CDH1	NM_001317185.2		c.-1239C>T		5_prime_UTR_premature_start_codon_gain	Exon 3 of 16	NP_001304114.1
	CDH1	NM_001317186.2		c.-1443C>T		5_prime_UTR_premature_start_codon_gain	Exon 3 of 15	NP_001304115.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDH1	ENST00000261769.10	TSL:1 MANE Select	c.377C>T	p.Pro126Leu	missense	Exon 3 of 16	ENSP00000261769.4	P12830-1
	CDH1	ENST00000422392.6	TSL:1	c.377C>T	p.Pro126Leu	missense	Exon 3 of 15	ENSP00000414946.2	P12830-2
	CDH1	ENST00000562836.5	TSL:1	n.448C>T		non_coding_transcript_exon	Exon 2 of 15

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152196 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.0000588

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 250648 AF XY: 0.0000221

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000884

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000171 AC: 25 AN: 1461282 Hom.: 0 Cov.: 32 AF XY: 0.0000179 AC XY: 13 AN XY: 726990

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39696

South Asian (SAS) AF: 0.000139 AC: 12 AN: 86244

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5746

European-Non Finnish (NFE) AF: 0.00000810 AC: 9 AN: 1111494

Other (OTH) AF: 0.0000166 AC: 1 AN: 60376

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152196 Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3 AN XY: 74334

African (AFR) AF: 0.0000241 AC: 1 AN: 41452

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

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

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000108 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	3	1	Hereditary diffuse gastric adenocarcinoma (4)
-	3	-	not provided (3)
-	1	1	Hereditary cancer-predisposing syndrome (2)
-	1	-	Familial cancer of breast;C0376358:Prostate cancer;C0476089:Endometrial carcinoma;C0919267:Ovarian neoplasm;C1708349:Hereditary diffuse gastric adenocarcinoma;C4551988:Blepharocheilodontic syndrome 1 (1)
-	1	-	Hereditary breast ovarian cancer syndrome (1)
-	1	-	not specified (1)
-	1	-	Ovarian cancer;C1708349:Hereditary diffuse gastric adenocarcinoma (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	1.0
DANN	Benign	0.64
DEOGEN2	Uncertain	0.50	D
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.035	N
LIST_S2	Benign	0.57	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.076	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.1	L
PhyloP100		0.20
PrimateAI	Benign	0.23	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.058
Sift	Benign	0.19	T
Sift4G	Benign	0.30	T
Polyphen		0.30	B
Vest4		0.15
MVP		0.57
MPC		0.26
ClinPred		0.019	T
GERP RS		-1.8
Varity_R		0.014
gMVP		0.12
Mutation Taster		=97/3	polymorphism

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

Other links and lift over

dbSNP: rs746703615; hg19: chr16-68835786;