Genetic Variant FKBP10:p.Ser8AlafsTer151 (chr17-41813048-GC-G) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1PM2

The NM_021939.4(FKBP10):c.21delC(p.Ser8AlafsTer151) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,457,344 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P7P) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

FKBP10
NM_021939.4 frameshift

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.458

Publications

1 publications found

Variant links:

Genes affected

FKBP10 (HGNC:18169): (FKBP prolyl isomerase 10) The protein encoded by this gene belongs to the FKBP-type peptidyl-prolyl cis/trans isomerase (PPIase) family. This protein localizes to the endoplasmic reticulum and acts as a molecular chaperone. Alternatively spliced variants encoding different isoforms have been reported, but their biological validity has not been determined.[provided by RefSeq, Nov 2009]

FKBP10 Gene-Disease associations (from GenCC):

Bruck syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
osteogenesis imperfecta type 11
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Illumina
osteogenesis imperfecta type 3
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
osteogenesis imperfecta type 4
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
arthrogryposis-like syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Bruck syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

FKBP10 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 53 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FKBP10	NM_021939.4 link	c.21delC	p.Ser8AlafsTer151	frameshift_variant	Exon 1 of 10	ENST00000321562.9	NP_068758.3	Q96AY3-1A0A024R1W3Q8NAG5Q658U4
FKBP10	XM_011525099.4 link	c.21delC	p.Ser8AlafsTer151	frameshift_variant	Exon 1 of 11		XP_011523401.1
FKBP10	XM_011525100.3 link	c.-107delC		5_prime_UTR_variant	Exon 1 of 10		XP_011523402.1
FKBP10	XM_047436515.1 link	c.-107delC		5_prime_UTR_variant	Exon 1 of 9		XP_047292471.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FKBP10	ENST00000321562.9 link	c.21delC	p.Ser8AlafsTer151	frameshift_variant	Exon 1 of 10	1	NM_021939.4	ENSP00000317232.4		Q96AY3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1457344

Hom.:

Cov.:

AF XY:

0.00000414

AC XY:

AN XY:

724968

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33400

American (AMR)

AF:

0.00

AC:

AN:

44680

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

86148

European-Finnish (FIN)

AF:

0.0000388

AC:

AN:

51546

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4204

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111510

Other (OTH)

AF:

0.00

AC:

AN:

60070

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000065), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.292

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.46

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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17-41813048-GCC-GC

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over