chr20-45307662-C-G

Position:

• chr20-45307662-C-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_Strong BP6 BS1 BS2

The ENST00000372756.6(MATN4):​c.-35+513G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00632 in 152,318 control chromosomes in the GnomAD database, including 29 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

• Frequency: Genomes: 𝑓 0.0063 (29 hom., cov: 32)
• Consequence: MATN4 ENST00000372756.6 intron
• Clinical Significance: Benign no assertion criteria provided B:1
• Conservation: PhyloP100: -0.412

Genes affected

MATN4 (HGNC:6910): (matrilin 4) This gene encodes a member of von Willebrand factor A domain-containing protein family. The proteins of this family are thought to be involved in the formation of filamentous networks in the extracellular matrices of various tissues. This family member is thought to be play a role in reorganizing and regenerating the corneal matrix in granular and lattice type I dystrophies. It may also be involved in wound healing in the dentin-pulp complex. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]

RBPJL (HGNC:13761): (recombination signal binding protein for immunoglobulin kappa J region like) This gene encodes a member of the suppressor of hairless protein family. A similar protein in mouse is a transcription factor that binds to DNA sequences almost identical to that bound by the Notch receptor signaling pathway transcription factor recombining binding protein J. The mouse protein has been shown to activate transcription in concert with Epstein-Barr virus nuclear antigen-2. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

ACMG classification

Verdict is Benign. Variant got -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 20-45307662-C-G is Benign according to our data. Variant chr20-45307662-C-G is described in ClinVar as [Benign]. Clinvar id is 444107.Status of the report is no_assertion_criteria_provided, 0 stars.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.00632 (962/152318) while in subpopulation AMR AF= 0.0472 (723/15304). AF 95% confidence interval is 0.0444. There are 29 homozygotes in gnomad4. There are 534 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 29 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MATN4	NM_001393530.1	c.-35+513G>C		intron_variant		ENST00000372756.6	NP_001380459.1
RBPJL	NM_014276.4	c.23-481C>G		intron_variant		ENST00000343694.8	NP_055091.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RBPJL	ENST00000343694.8	c.23-481C>G		intron_variant		1	NM_014276.4	ENSP00000341243	A1
MATN4	ENST00000372756.6	c.-35+513G>C		intron_variant		1	NM_001393530.1	ENSP00000361842

Frequencies

GnomAD3 genomes AF: 0.00624 AC: 949 AN: 152200 Hom.: 27 Cov.: 32

Gnomad AFR AF: 0.000869

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0465

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0310

Gnomad SAS AF: 0.00228

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00955

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00632 AC: 962 AN: 152318 Hom.: 29 Cov.: 32 AF XY: 0.00717 AC XY: 534 AN XY: 74476

Gnomad4 AFR AF: 0.000866

Gnomad4 AMR AF: 0.0472

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0311

Gnomad4 SAS AF: 0.00228

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.00945

Alfa AF: 0.0000698 Hom.: 0

Bravo AF: 0.0102

Asia WGS AF: 0.0130 AC: 45 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

Type 2 diabetes mellitus Benign:1

Benign, no assertion criteria provided

case-control

Diabetes Molecular Genetics Section, Phoenix Epidemiology and Clinical Research Branch, National Institutes of Health

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	3.4
DANN	Benign	0.83

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

LitVar

Other links and lift over

dbSNP: rs138228405; hg19: chr20-43936302;