Genetic Variant FERMT1:n.3118_3119delCA (chr20-6075047-TTG-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_017671.5(FERMT1):c.*2124_*2125delCA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0122 in 142,154 control chromosomes in the GnomAD database, including 20 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.012 ( 20 hom., cov: 23)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FERMT1
NM_017671.5 3_prime_UTR

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.615

Publications

0 publications found

Variant links:

Genes affected

FERMT1 (HGNC:15889): (FERM domain containing kindlin 1) This gene encodes a member of the fermitin family, and contains a FERM domain and a pleckstrin homology domain. The encoded protein is involved in integrin signaling and linkage of the actin cytoskeleton to the extracellular matrix. Mutations in this gene have been linked to Kindler syndrome. [provided by RefSeq, Dec 2009]

FERMT1 Gene-Disease associations (from GenCC):

Kindler syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp, PanelApp Australia

FERMT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0122 (1734/142154) while in subpopulation AFR AF = 0.0422 (1575/37302). AF 95% confidence interval is 0.0405. There are 20 homozygotes in GnomAd4. There are 846 alleles in the male GnomAd4 subpopulation. Median coverage is 23. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAd4 at 20 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
FERMT1	NM_017671.5 link	c.2124_2125delCA	3_prime_UTR_variant	Exon 15 of 15	ENST00000217289.9	NP_060141.3	Q9BQL6-1Q54A15Q49AC8
FERMT1	XM_024451935.2 link	c.2124_2125delCA	3_prime_UTR_variant	Exon 15 of 15		XP_024307703.1
FERMT1	XM_047440259.1 link	c.2124_2125delCA	3_prime_UTR_variant	Exon 15 of 15		XP_047296215.1
FERMT1	XM_047440260.1 link	c.2124_2125delCA	3_prime_UTR_variant	Exon 14 of 14		XP_047296216.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FERMT1	ENST00000478194.1 link	n.3118_3119delCA		non_coding_transcript_exon_variant	Exon 7 of 7	1
FERMT1	ENST00000217289.9 link	c.2124_2125delCA		3_prime_UTR_variant	Exon 15 of 15	1	NM_017671.5	ENSP00000217289.4		Q9BQL6-1

Frequencies

GnomAD3 genomes

AF:

0.0122

AC:

1735

AN:

142080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0424

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00438

Gnomad ASJ

AF:

0.0144

Gnomad EAS

AF:

0.000781

Gnomad SAS

AF:

0.000441

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000276

Gnomad OTH

AF:

0.0123

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

128

Hom.:

AF XY:

0.00

AC XY:

AN XY:

African (AFR)

AC:

AN:

American (AMR)

AC:

AN:

Ashkenazi Jewish (ASJ)

AC:

AN:

East Asian (EAS)

AF:

0.00

AC:

AN:

128

South Asian (SAS)

AC:

AN:

European-Finnish (FIN)

AC:

AN:

Middle Eastern (MID)

AC:

AN:

European-Non Finnish (NFE)

AC:

AN:

Other (OTH)

AC:

AN:

GnomAD4 genome

AF:

0.0122

AC:

1734

AN:

142154

Hom.:

Cov.:

AF XY:

0.0122

AC XY:

846

AN XY:

69320

show subpopulations

African (AFR)

AF:

0.0422

AC:

1575

AN:

37302

American (AMR)

AF:

0.00438

AC:

AN:

14170

Ashkenazi Jewish (ASJ)

AF:

0.0144

AC:

AN:

3400

East Asian (EAS)

AF:

0.000783

AC:

AN:

5110

South Asian (SAS)

AF:

0.000442

AC:

AN:

4526

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9366

Middle Eastern (MID)

AF:

0.00

AC:

AN:

290

European-Non Finnish (NFE)

AF:

0.000276

AC:

AN:

65126

Other (OTH)

AF:

0.0122

AC:

AN:

1972

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

136

203

271

339

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0106

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Kindler syndrome

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.61

Mutation Taster

=100/0

polymorphism

(source)

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

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20-6075047-TTG-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over