NM_005327.7:c.773C>T

Variant names:

• chr4-108033239-C-T
• rs137853103
• NM_005327.7:c.773C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_005327.7(HADH):​c.773C>T​(p.Pro258Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. P258P) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HADH NM_005327.7 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.91
• Publications: 9 publications found

Genes affected

HADH (HGNC:4799): (hydroxyacyl-CoA dehydrogenase) This gene is a member of the 3-hydroxyacyl-CoA dehydrogenase gene family. The encoded protein functions in the mitochondrial matrix to catalyze the oxidation of straight-chain 3-hydroxyacyl-CoAs as part of the beta-oxidation pathway. Its enzymatic activity is highest with medium-chain-length fatty acids. Mutations in this gene cause one form of familial hyperinsulinemic hypoglycemia. The human genome contains a related pseudogene of this gene on chromosome 15. [provided by RefSeq, May 2010]

HADH Gene-Disease associations (from GenCC):

• 3-hydroxyacyl-CoA dehydrogenase deficiency

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• hyperinsulinism due to short chain 3-hydroxylacyl-CoA dehydrogenase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, ClinGen
• hyperinsulinemic hypoglycemia, familial, 4

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.989
• PP5: Variant 4-108033239-C-T is Pathogenic according to our data. Variant chr4-108033239-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 8020.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005327.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HADH	NM_005327.7	MANE Select	c.773C>T	p.Pro258Leu	missense	Exon 7 of 8	NP_005318.6
	HADH	NM_001184705.4		c.824C>T	p.Pro275Leu	missense	Exon 8 of 9	NP_001171634.3
	HADH	NM_001331027.2		c.785C>T	p.Pro262Leu	missense	Exon 7 of 8	NP_001317956.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HADH	ENST00000309522.8	TSL:1 MANE Select	c.773C>T	p.Pro258Leu	missense	Exon 7 of 8	ENSP00000312288.4
	HADH	ENST00000505878.4	TSL:1	c.1001C>T	p.Pro334Leu	missense	Exon 8 of 9	ENSP00000425952.2
	HADH	ENST00000603302.5	TSL:1	c.824C>T	p.Pro275Leu	missense	Exon 8 of 9	ENSP00000474560.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Hyperinsulinemic hypoglycemia, familial, 4 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.94
BayesDel_addAF	Pathogenic	0.54	D
BayesDel_noAF	Pathogenic	0.54
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D
Eigen	Pathogenic	0.99
Eigen_PC	Pathogenic	0.92
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Uncertain	0.22	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.2	M
PhyloP100		7.9
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-9.8	D
REVEL	Pathogenic	0.96
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.99
MutPred		0.94		Gain of stability (P = 0.0265)
MVP		0.99
MPC		0.89
ClinPred		1.0	D
GERP RS		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.98
gMVP		0.96
Mutation Taster		=4/96	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

Other links and lift over

dbSNP: rs137853103; hg19: chr4-108954395;