2-88123088-T-G

Variant summary

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

The NM_001443.3(FABP1):c.350A>C(p.Asp117Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,459,806 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: FABP1 NM_001443.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.61

Genes affected

FABP1 (HGNC:3555): (fatty acid binding protein 1) This gene encodes the fatty acid binding protein found in liver. Fatty acid binding proteins are a family of small, highly conserved, cytoplasmic proteins that bind long-chain fatty acids and other hydrophobic ligands. This protein and FABP6 (the ileal fatty acid binding protein) are also able to bind bile acids. It is thought that FABPs roles include fatty acid uptake, transport, and metabolism. [provided by RefSeq, Mar 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FABP1	NM_001443.3	c.350A>C	p.Asp117Ala	missense_variant	4/4	ENST00000295834.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FABP1	ENST00000295834.8	c.350A>C	p.Asp117Ala	missense_variant	4/4	1	NM_001443.3	P1
FABP1	ENST00000393750.3	c.*1364A>C		3_prime_UTR_variant	3/3	2
FABP1	ENST00000495375.1	n.2025A>C		non_coding_transcript_exon_variant	4/4	3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459806 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 725998

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

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

Dec 12, 2023

The c.350A>C (p.D117A) alteration is located in exon 4 (coding exon 4) of the FABP1 gene. This alteration results from a A to C substitution at nucleotide position 350, causing the aspartic acid (D) at amino acid position 117 to be replaced by an alanine (A). 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	Benign	0.17
BayesDel_addAF	Benign	-0.063	T
BayesDel_noAF	Benign	-0.33
Cadd	Uncertain	25
Dann	Uncertain	0.99
DEOGEN2	Benign	0.27	T
Eigen	Uncertain	0.27
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.015	T
MetaRNN	Uncertain	0.63	D
MetaSVM	Benign	-1.0	T
MutationAssessor	Pathogenic	3.1	M
MutationTaster	Benign	0.92	D;D
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-3.2	D
REVEL	Benign	0.13
Sift	Benign	0.057	T
Sift4G	Benign	0.18	T
Polyphen		0.51	P
Vest4		0.60
MutPred		0.66		Gain of catalytic residue at D117 (P = 0.0311);
MVP		0.46
MPC		0.35
ClinPred		1.0	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.59
gMVP		0.78

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: chr2-88422607;