Genetic Variant FKBP10:c.-23+25G>C (chr17-41812764-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000585664.5(FKBP10):c.-23+25G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000256 in 391,338 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000026 ( 0 hom. )

Consequence

FKBP10
ENST00000585664.5 intron

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0660

Publications

0 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 links:

P3H4 (HGNC:16946): (prolyl 3-hydroxylase family member 4 (inactive)) This nucleolar protein was first characterized because it was an autoantigen in cases on interstitial cystitis. The protein, with a predicted molecular weight of 50 kDa, appears to be localized in the particulate compartment of the interphase nucleolus, with a distribution distinct from that of nucleolar protein B23. During mitosis it is associated with chromosomes. [provided by RefSeq, Jul 2008]

P3H4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE	Protein	UniProt
FKBP10	NM_021939.4 link	c.-271G>C	upstream_gene_variant	ENST00000321562.9	NP_068758.3	Q96AY3-1A0A024R1W3Q8NAG5Q658U4
FKBP10	XM_011525099.4 link	c.-271G>C	upstream_gene_variant		XP_011523401.1
FKBP10	XM_011525100.3 link	c.-398G>C	upstream_gene_variant		XP_011523402.1
FKBP10	XM_047436515.1 link	c.-398G>C	upstream_gene_variant		XP_047292471.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FKBP10	ENST00000321562.9 link	c.-271G>C		upstream_gene_variant		1	NM_021939.4	ENSP00000317232.4		Q96AY3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000256

AC:

AN:

391338

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

207408

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:

11042

American (AMR)

AF:

0.00

AC:

AN:

16870

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

11930

East Asian (EAS)

AF:

0.00

AC:

AN:

25144

South Asian (SAS)

AF:

0.00

AC:

AN:

44902

European-Finnish (FIN)

AF:

0.00

AC:

AN:

23738

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1712

European-Non Finnish (NFE)

AF:

0.00000428

AC:

AN:

233540

Other (OTH)

AF:

0.00

AC:

AN:

22460

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Osteogenesis imperfecta type 11

Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

8.8

(source)

DANN

Benign

0.79

PhyloP100

0.066

PromoterAI

-0.11

Neutral

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over