rs80356746

Variant names:

• chr9-101362827-G-C
• rs80356746
• NM_001701.4:c.858C>G
• BAAT p.Ser286Ser

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001701.4(BAAT):​c.858C>G​(p.Ser286Ser) variant causes a synonymous 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. Variant has been reported in ClinVar as not provided (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: BAAT NM_001701.4 synonymous
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: -0.563
• Publications: 1 publications found

Genes affected

BAAT (HGNC:932): (bile acid-CoA:amino acid N-acyltransferase) The protein encoded by this gene is a liver enzyme that catalyzes the transfer of C24 bile acids from the acyl-CoA thioester to either glycine or taurine, the second step in the formation of bile acid-amino acid conjugates. The bile acid conjugates then act as a detergent in the gastrointestinal tract, which enhances lipid and fat-soluble vitamin absorption. Defects in this gene are a cause of familial hypercholanemia (FHCA). Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

BAAT Gene-Disease associations (from GenCC):

• hypercholanemia, familial 1

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• bile acid CoA:amino acid N-acyltransferase deficiency

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen
• familial hypercholanemia

  Inheritance: AR, Unknown Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Laboratory for Molecular Medicine
• bile acid conjugation defect 1

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=-0.563 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001701.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BAAT	NM_001701.4	MANE Select	c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	NP_001692.1	Q14032
	BAAT	NM_001127610.2		c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	NP_001121082.1	Q14032
	BAAT	NM_001374715.1		c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	NP_001361644.1	Q14032

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BAAT	ENST00000259407.7	TSL:1 MANE Select	c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	ENSP00000259407.2	Q14032
	BAAT	ENST00000395051.4	TSL:1	c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	ENSP00000378491.3	Q14032
	BAAT	ENST00000674556.1		c.858C>G	p.Ser286Ser	synonymous	Exon 4 of 4	ENSP00000501610.1	Q14032

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: not provided

Revision: no classification provided

Pathogenic	VUS	Benign	Condition
-	-	-	Hemolytic uremic syndrome, atypical, susceptibility to, 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.65
DANN	Benign	0.52
PhyloP100		-0.56
Mutation Taster		=100/0	disease causing (ClinVar)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs80356746;

hg19: chr9-104125109;