20-1372136-A-T

Position:

• chr20-1372136-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000801.5(FKBP1A):​c.303T>A​(p.Asp101Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 10/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: FKBP1A NM_000801.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.425

Genes affected

FKBP1A (HGNC:3711): (FKBP prolyl isomerase 1A) The protein encoded by this gene is a member of the immunophilin protein family, which play a role in immunoregulation and basic cellular processes involving protein folding and trafficking. The protein is a cis-trans prolyl isomerase that binds the immunosuppressants FK506 and rapamycin. It interacts with several intracellular signal transduction proteins including type I TGF-beta receptor. It also interacts with multiple intracellular calcium release channels, and coordinates multi-protein complex formation of the tetrameric skeletal muscle ryanodine receptor. In mouse, deletion of this homologous gene causes congenital heart disorder known as noncompaction of left ventricular myocardium. Multiple alternatively spliced variants, encoding the same protein, have been identified. The human genome contains five pseudogenes related to this gene, at least one of which is transcribed. [provided by RefSeq, Sep 2008]

SDCBP2-AS1 (HGNC:44314): (SDCBP2 antisense RNA 1)

FKBP1A-SDCBP2 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21054801).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FKBP1A	NM_000801.5	c.303T>A	p.Asp101Glu	missense_variant	4/5	ENST00000400137.9	NP_000792.1
FKBP1A-SDCBP2	NR_037661.1	n.259+20698T>A		intron_variant, non_coding_transcript_variant
SDCBP2-AS1	NR_040047.1	n.441-942A>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FKBP1A	ENST00000400137.9	c.303T>A	p.Asp101Glu	missense_variant	4/5	1	NM_000801.5	ENSP00000383003	P1
SDCBP2-AS1	ENST00000609470.7	n.126-942A>T		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 13, 2024

The c.303T>A (p.D101E) alteration is located in exon 4 (coding exon 4) of the FKBP1A gene. This alteration results from a T to A substitution at nucleotide position 303, causing the aspartic acid (D) at amino acid position 101 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.61
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	9.5
DANN	Benign	0.97
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.27	T
M_CAP	Benign	0.059	D
MetaRNN	Benign	0.21	T
MutationTaster	Benign	0.99	D;D;D;D;D
Sift4G	Uncertain	0.037	D
Vest4		0.37
MVP		0.57
ClinPred		0.56	D
GERP RS		-6.9

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr20-1352780;