rs149665640

Variant names:

• chr20-6075715-G-A
• rs149665640
• ENST00000478194.1:n.2452C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_017671.5(FERMT1):​c.*1458C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00684 in 152,234 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0068 (14 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FERMT1 NM_017671.5 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.173
• Publications: 1 publications found

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

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 20-6075715-G-A is Benign according to our data. Variant chr20-6075715-G-A is described in ClinVar as [Benign]. Clinvar id is 339181.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00684 (1042/152234) while in subpopulation AFR AF = 0.0237 (985/41534). AF 95% confidence interval is 0.0225. There are 14 homozygotes in GnomAd4. There are 502 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 14 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FERMT1	NM_017671.5	c.*1458C>T		3_prime_UTR_variant	Exon 15 of 15	ENST00000217289.9	NP_060141.3
FERMT1	XM_024451935.2	c.*1458C>T		3_prime_UTR_variant	Exon 15 of 15		XP_024307703.1
FERMT1	XM_047440259.1	c.*1458C>T		3_prime_UTR_variant	Exon 15 of 15		XP_047296215.1
FERMT1	XM_047440260.1	c.*1458C>T		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	n.2452C>T		non_coding_transcript_exon_variant	Exon 7 of 7	1
FERMT1	ENST00000217289.9	c.*1458C>T		3_prime_UTR_variant	Exon 15 of 15	1	NM_017671.5	ENSP00000217289.4
FERMT1	ENST00000699095.1	c.*1458C>T		3_prime_UTR_variant	Exon 14 of 14			ENSP00000514127.1

Frequencies

GnomAD3 genomes AF: 0.00673 AC: 1024 AN: 152116 Hom.: 13 Cov.: 32

Gnomad AFR AF: 0.0234

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00242

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: 0.00765

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 168 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 100

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AF: 0.00 AC: 0 AN: 138

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AC: 0 AN: 0

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 30

Other (OTH) AC: 0 AN: 0

GnomAD4 genome AF: 0.00684 AC: 1042 AN: 152234 Hom.: 14 Cov.: 32 AF XY: 0.00674 AC XY: 502 AN XY: 74440

African (AFR) AF: 0.0237 AC: 985 AN: 41534

American (AMR) AF: 0.00242 AC: 37 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4814

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68018

Other (OTH) AF: 0.00757 AC: 16 AN: 2114

Alfa AF: 0.00369 Hom.: 1

Bravo AF: 0.00751

Asia WGS AF: 0.00404 AC: 14 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Kindler syndrome Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	2.5
DANN	Benign	0.65
PhyloP100		-0.17
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	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: rs149665640; hg19: chr20-6056362;