7-138091822-CTC-TTT

Variant names:

• chr7-138091822-CTC-TTT
• NM_005989.4:c.316_318delCTCinsTTT
• AKR1D1 p.Leu106Phe

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PS1 PP2

The NM_005989.4(AKR1D1):​c.316_318delCTCinsTTT​(p.Leu106Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: AKR1D1 NM_005989.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.26
• Publications: 0 publications found

Genes affected

AKR1D1 (HGNC:388): (aldo-keto reductase family 1 member D1) The enzyme encoded by this gene is responsible for the catalysis of the 5-beta-reduction of bile acid intermediates and steroid hormones carrying a delta(4)-3-one structure. Deficiency of this enzyme may contribute to hepatic dysfunction. Three transcript variants encoding different isoforms have been found for this gene. Other variants may be present, but their full-length natures have not been determined yet. [provided by RefSeq, Jul 2010]

AKR1D1 Gene-Disease associations (from GenCC):

• congenital bile acid synthesis defect 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

ENSG00000308006 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PS1: Transcript NM_005989.4 (AKR1D1) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 6 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 0.17215 (below the threshold of 3.09). Trascript score misZ: 0.98686 (below the threshold of 3.09). GenCC associations: The gene is linked to congenital bile acid synthesis defect 2.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005989.4. 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
	AKR1D1	NM_005989.4	MANE Select	c.316_318delCTCinsTTT	p.Leu106Phe	missense	N/A	NP_005980.1	P51857-1
	AKR1D1	NM_001190907.2		c.316_318delCTCinsTTT	p.Leu106Phe	missense	N/A	NP_001177836.1	P51857-2
	AKR1D1	NM_001190906.2		c.316_318delCTCinsTTT	p.Leu106Phe	missense	N/A	NP_001177835.1	P51857-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AKR1D1	ENST00000242375.8	TSL:1 MANE Select	c.316_318delCTCinsTTT	p.Leu106Phe	missense	N/A	ENSP00000242375.3	P51857-1
	AKR1D1	ENST00000885436.1		c.445_447delCTCinsTTT	p.Leu149Phe	missense	N/A	ENSP00000555495.1
	AKR1D1	ENST00000885435.1		c.316_318delCTCinsTTT	p.Leu106Phe	missense	N/A	ENSP00000555494.1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.3

Splicing

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

hg19: chr7-137776568;