Rare Disease Library

Browse Orphanet-curated rare diseases with HPO phenotype annotations, synonyms, and linked support programs. Search by name, abbreviation, or synonym.

Try: "IgA nephropathy", "C3G", "Berger's disease", "PKU", "Duchenne"

29 matching diseasesClear search ×

Constitutional megaloblastic anemia with severe neurologic disease

DHFR deficiency · Dihydrofolate reductase deficiency

ORPHA:319651

46,XY difference of sex development due to 17-beta-hydroxysteroid dehydrogenase 3 deficiency

17-beta-hydroxysteroid dehydrogenase 3 deficiency · 17-ketoreductase deficiency

ORPHA:752

46,XY difference of sex development due to 5-alpha-reductase 2 deficiency

46,XY DSD due to 5-alpha-reductase 2 deficiency · Pseudovaginal perineoscrotal hypospadias

ORPHA:753

Combined immunodeficiency-megaloblastic anemia due to methylenetetrahydrofolate dehydrogenase 1 deficiency

CIMAH · Methylenetetrahydrofolate dehydrogenase 1 deficiency

ORPHA:658813

Dihydropteridine reductase deficiency

Hyperphenylalaninemia due to dihydropteridine reductase deficiency · PKU type 2

ORPHA:226

Dihydropyrimidine dehydrogenase deficiency

Familial pyrimidinemia

ORPHA:1675

Dihydropyrimidinuria

Dihydropyrimidinase deficiency

ORPHA:38874

Dimethylglycine dehydrogenase deficiency

DMG dehydrogenase deficiency · DMGDH deficiency

ORPHA:243343

Dopa-responsive dystonia due to sepiapterin reductase deficiency

Autosomal recessive sepiapterin reductase-deficient DRD · DRD due to SRD

ORPHA:70594

Fatty acyl-CoA reductase 1 deficiency

PFCRD · FAR1 deficiency

ORPHA:438178

Glycogen storage disease due to lactate dehydrogenase H-subunit deficiency

GSD due to lactate dehydrogenase H-subunit deficiency · Glycogenosis due to lactate dehydrogenase H-subunit deficiency

ORPHA:284435

Glycogen storage disease due to lactate dehydrogenase M-subunit deficiency

GSD due to lactate dehydrogenase M-subunit deficiency · Glycogenosis due to lactate dehydrogenase M-subunit deficiency

ORPHA:284426

Homocystinuria due to methylene tetrahydrofolate reductase deficiency

MTHFR deficiency · Methylene tetrahydrofolate reductase deficiency

ORPHA:395

Hyperlysinemia

Hyperlysinemia type I · Lysine alpha-ketoglutarate reductase deficiency

ORPHA:2203

Isolated complex I deficiency

Isolated NADH-coenzyme Q reductase deficiency · Isolated NADH-ubiquinone reductase deficiency

ORPHA:2609

Isolated complex III deficiency

Isolated CoQ-cytochrome C reductase deficiency · Isolated coenzyme Q-cytochrome C reductase deficiency

ORPHA:1460

Isolated succinate-CoQ reductase deficiency

Isolated mitochondrial respiratory chain complex II deficiency · Isolated succinate-coenzyme Q reductase deficiency

ORPHA:3208

Neurodegenerative syndrome due to cerebral folate transport deficiency

Folate receptor alpha deficiency · Cerebral folate transport deficiency

ORPHA:217382

Primary hyperoxaluria type 2

D-glycerate dehydrogenase deficiency · L-glyceric aciduria

ORPHA:93599

Progressive encephalopathy with leukodystrophy due to DECR deficiency

2,4-dienoyl-CoA reductase deficiency · DECR deficiency with hyperlysinemia

ORPHA:431361

Pseudo-Zellweger syndrome

Thiolase deficiency

ORPHA:2981

PYCR1-related De Barsy syndrome

PYCR1 deficiency · Pyrroline-5-carboxylate reductase 1 deficiency

ORPHA:293633

Pyruvate dehydrogenase deficiency

PDH · PDHC

ORPHA:765

Pyruvate dehydrogenase E2 deficiency

Dihydrolipoamide acetyltransferase component of pyruvate dehydrogenase complex deficiency · Dihydrolipoyllysine-residue acetyltransferase component of pyruvate dehydrogenase complex deficiency

ORPHA:79244

Pyruvate dehydrogenase E3 deficiency

DLD deficiency · Dihydrolipoamide dehydrogenase deficiency

ORPHA:2394

Pyruvate dehydrogenase E3-binding protein deficiency

2-oxoglutarate complex deficiency · Branched chain alpha-ketoacid dehydrogenase complex deficiency

ORPHA:255182

Smith-Lemli-Opitz syndrome

7-dehydrocholesterol reductase deficiency · RSH syndrome

ORPHA:818

Tyrosinemia type 1

FAH deficiency · Fumarylacetoacetase deficiency

ORPHA:882

Xanthinuria type I

XDH deficiency · XO deficiency

ORPHA:93601