Inborn disorder of amino acid metabolism
MONDO:0004736An inherited disorder that affects the metabolism of the amino acids. Representative examples include alkaptonuria, homocystinuria, tyrosinemia, and phenylketonuria.
Also known as: inborn cellular amino acid metabolic process disorder, inborn error of amino acid metabolism, inborn error of cellular amino acid metabolic process, inherited amino acid metabolic disorder, rare inborn error of cellular amino acid metabolic process, amino acid metabolic disorder, amino acid metabolism, inborn errors, inborn amino acid metabolism disorder
159 clinical trials for this condition and its sub-types, 6 tagged with Inborn disorder of amino acid metabolism itself.
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Sub-types of Inborn disorder of amino acid metabolism
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Inborn disorder of phenylalanine and tyrosine metabolism 0 trials · 65 incl. sub-types
2 sub-types
- Disorder of phenylalanine metabolism 0 trials · 60 incl. sub-types Sub-types →
- Disorder of tyrosine metabolism 0 trials · 8 incl. sub-types Sub-types →
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Urea cycle disorder 14 trials · 30 incl. sub-types
3 sub-types
- Urea cycle disorder or inherited hyperammonemia 0 trials · 24 incl. sub-types Sub-types →
- Citrullinemia 2 trials · 6 incl. sub-types Sub-types →
- 3-methylcrotonyl-CoA carboxylase 1 deficiency 1 trial
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Inborn organic aciduria 5 trials · 29 incl. sub-types
7 sub-types
- Classic organic aciduria 0 trials · 20 incl. sub-types Sub-types →
- Methylmalonic acidemia 7 trials · 8 incl. sub-types Sub-types →
- Glutaryl-CoA dehydrogenase deficiency 4 trials
- Maple syrup urine disease 2 trials · 4 incl. sub-types Sub-types →
- Glutaric acidemia type 3 0 trials
- Malonic aciduria 0 trials
- Methylmalonate semialdehyde dehydrogenase deficiency 0 trials
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Inborn disorder of amino acid transport 1 trial · 16 incl. sub-types
19 sub-types
- Cystinuria 7 trials Sub-types →
- Undetermined early-onset epileptic encephalopathy 1 trial · 6 incl. sub-types Sub-types →
- Oculocerebrorenal syndrome 3 trials
- Hartnup disease 0 trials
- Autosomal recessive cerebellar ataxia - pyramidal signs - nystagmus - oculomotor apraxia syndrome 0 trials Sub-types →
- Blue diaper syndrome 0 trials
- Dicarboxylic aminoaciduria 0 trials
- Disorder of neutral amino acid transport 0 trials
- Episodic ataxia type 6 0 trials
- Foveal hypoplasia - optic nerve decussation defect - anterior segment dysgenesis syndrome 0 trials
- Histidinuria due to a renal tubular defect 0 trials
- Hyperdibasic aminoaciduria type 1 0 trials
- Hypotonia-cystinuria syndrome 0 trials Sub-types →
- Iminoglycinuria 0 trials
- Juvenile nephropathic cystinosis 0 trials
- Lysinuric protein intolerance 0 trials
- Nephropathic infantile cystinosis 0 trials
- Ocular cystinosis 0 trials
- Progressive essential tremor-speech impairment-facial dysmorphism-intellectual disability-abnormal behavior syndrome 0 trials
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Homocystinuria 7 trials · 11 incl. sub-types
5 sub-types
- Classic homocystinuria 4 trials
- Hyperhomocysteinemia 3 trials
- Methylmalonic aciduria and homocystinuria 1 trial · 3 incl. sub-types Sub-types →
- Homocystinuria without methylmalonic aciduria 0 trials · 2 incl. sub-types Sub-types →
- Homocystinuria due to methylene tetrahydrofolate reductase deficiency 1 trial
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Hyperphenylalaninemia due to tetrahydrobiopterin deficiency 6 trials · 7 incl. sub-types
4 sub-types
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Albinism 6 trials
2 sub-types
- X-linked recessive ocular albinism 0 trials
- Albinism-hearing loss syndrome 0 trials
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Cerebral creatine deficiency syndrome 0 trials · 6 incl. sub-types
3 sub-types
- Creatine transporter deficiency 6 trials
- AGAT deficiency 1 trial
- Guanidinoacetate methyltransferase deficiency 1 trial
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Inborn disorder of branched-chain amino acid metabolism 0 trials · 4 incl. sub-types
7 sub-types
- Maple syrup urine disease 2 trials · 4 incl. sub-types Sub-types →
- Holocarboxylase synthetase deficiency 1 trial
- 3-hydroxyisobutyric aciduria 0 trials
- 3-hydroxyisobutyryl-CoA hydrolase deficiency 0 trials
- Branched-chain keto acid dehydrogenase kinase deficiency 0 trials
- Hypervalinemia and hyperleucine-isoleucinemia 0 trials
- Methylmalonate semialdehyde dehydrogenase deficiency 0 trials
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Inborn disorder of ornithine metabolism 0 trials · 4 incl. sub-types
2 sub-types
- Ornithine aminotransferase deficiency 4 trials
- P5CS deficiency 0 trials Sub-types →
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Adenylosuccinate lyase deficiency 2 trials
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Gamma-amino butyric acid metabolism disorder 0 trials · 1 incl. sub-types
3 sub-types
- Succinic semialdehyde dehydrogenase deficiency 1 trial
- GABA aminotransaminase deficiency 0 trials
- Homocarnosinosis 0 trials Sub-types →
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Inborn serine deficiency 0 trials · 1 incl. sub-types
1 sub-type
- Neurometabolic disorder due to serine deficiency 0 trials · 1 incl. sub-types Sub-types →
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Brunner syndrome 0 trials
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Aminoacylase 1 deficiency 0 trials
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Arakawa syndrome 2 0 trials
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Cystathioninuria 0 trials
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Disorder of methionine catabolism 0 trials
3 sub-types
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Glycine encephalopathy 0 trials
5 sub-types
- Atypical glycine encephalopathy 0 trials
- Glycine encephalopathy 1 0 trials
- Glycine encephalopathy 2 0 trials
- Infantile glycine encephalopathy 0 trials
- Neonatal glycine encephalopathy 0 trials
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Hyperglycinemia, transient neonatal 0 trials
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Hyperlysinemia 0 trials
1 sub-type
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2 sub-types
- Histidinemia 0 trials Sub-types →
- Urocanic aciduria 0 trials
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3 sub-types
- P5CS deficiency 0 trials Sub-types →
- Autosomal recessive cutis laxa type 2 0 trials Sub-types →
- Hyperprolinemia 0 trials Sub-types →
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3 sub-types
Most studied deeper sub-types
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One-Shot gene therapy could free PKU patients from strict diet
Disease control Not yet recruitingThis early-phase trial tests a single injection of a gene therapy called GS1168 in 9 adults with PKU whose condition is not well controlled by diet or other treatments. The therapy uses a harmless virus to deliver a working copy of the PAH gene, which is faulty in PKU, to help th…
Early phase 1 • Sponsor: Gritgen Therapeutics Co., Ltd. • Aim: Disease control
Last updated Sep 12, 2026 00:00 UTC
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Can a new injection tame the toxic ammonia of urea cycle disorders?
Disease control Not yet recruitingThis early-stage trial is evaluating an experimental drug called KRRO-121, given as a shot under the skin, to see if it is safe and tolerable. The study first tests KRRO-121 in healthy adults, then in people with urea cycle disorders—a group of inherited conditions that impair th…
Phase 1/2 • Sponsor: Korro Bio, Inc. • Aim: Disease control
Last updated Aug 22, 2026 00:00 UTC
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Tiny tablets could make PKU management easier for patients
Disease control Not yet recruitingThis study tests a new microtablet protein substitute for people with phenylketonuria (PKU), a condition requiring a strict low-protein diet. The microtablets combine protein with vitamins and minerals, aiming to be easier to take than current liquid or powder options. About 20 a…
Sponsor: Nutricia UK Ltd • Aim: Disease control
Last updated Jun 28, 2026 00:00 UTC
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Promising drug aims to slow kidney damage in rare lowe syndrome
Disease control Not yet recruitingThis early study tests a drug called piclidenoson in 5 adult men with Lowe syndrome, a rare genetic disorder that harms the kidneys. The goal is to see if the drug can improve how the kidneys reabsorb important small proteins over 6 months. Researchers will also check safety and …
Phase 2 • Sponsor: Can-Fite BioPharma • Aim: Disease control
Last updated Jun 27, 2026 09:05 UTC
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Could a vitamin B12 shot help kids with MMA? new trial underway
Disease control Not yet recruitingThis phase III trial tests a vitamin B12 injection (hydroxocobalamin chloride) in 20 children aged 6 months to 18 years with a specific type of methylmalonic acidemia (cobalamin C deficiency). The goal is to see if the injection can normalize levels of certain acids in the blood …
Phase 3 • Sponsor: CSPC ZhongQi Pharmaceutical Technology Co., Ltd. • Aim: Disease control
Last updated Jun 26, 2026 14:49 UTC
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Can tiny tablets replace protein powder for kids with PKU?
Symptom relief Not yet recruitingThis trial tests whether XPhe Piccos, a slow-release protein substitute in tiny tablets without phenylalanine, is acceptable and well-tolerated in children aged 3 and older with phenylketonuria (PKU) or hyperphenylalaninemia. Participants replace some or all of their usual protei…
Sponsor: metaX Institut fuer Diatetik GmbH • Aim: Symptom relief
Last updated Sep 05, 2026 00:00 UTC
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Robotic surgery breakthrough aims to slash chest pain after esophageal cancer surgery
Symptom relief Not yet recruitingThis early-stage trial tests a new robotic surgical method for esophageal cancer that avoids cuts between the ribs, which may cause less chest pain and faster recovery. About 31 adults with stage I to III esophageal cancer will be randomly assigned to either the new approach or s…
Phase 1 • Sponsor: Centre hospitalier de l'Université de Montréal (CHUM) • Aim: Symptom relief
Last updated Jun 27, 2026 11:02 UTC
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Can mindfulness ease trauma for Justice-Involved black teens?
Knowledge-focused Not yet recruitingThis study looks at whether mindfulness-based stress reduction can help Black teenage girls who have been involved with the justice system and their parents or caregivers. About 90 participants will report on stress, PTSD symptoms, and other outcomes before and after the program.…
Sponsor: University of Michigan • Aim: Knowledge-focused
Last updated Sep 10, 2026 00:00 UTC
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Could a breath test replace blood draws for metabolic disease monitoring?
Knowledge-focused Not yet recruitingThis study measures specific substances (metabolites) in the breath and blood of people with inherited metabolic disorders, those on a special ketogenic diet for epilepsy, and healthy volunteers. The goal is to see if a simple breath test can reliably track these metabolites, pot…
Sponsor: University Children's Hospital, Zurich • Aim: Knowledge-focused
Last updated Aug 14, 2026 00:00 UTC
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PKU mystery: why do some patients thrive despite high phe levels?
Knowledge-focused Not yet recruitingThis study looks at how blood phenylalanine (Phe) levels affect thinking, emotions, and daily functioning in adults with PKU. Researchers will ask 30 adults with PKU and their relatives to complete questionnaires. The goal is to understand why some people with high Phe levels hav…
Sponsor: Central Hospital, Nancy, France • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:05 UTC
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New DNA reader could crack unsolved rare disease cases
Knowledge-focused Not yet recruitingThis study tests a new DNA sequencing method that reads long stretches of DNA to find hidden genetic changes causing rare diseases like albinism and intellectual disability. Researchers will analyze stored blood or DNA from 150 patients who haven't gotten a clear diagnosis yet. T…
Sponsor: University Hospital, Bordeaux • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:03 UTC
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Diabetic eye patients at risk for extra retinal scarring?
Knowledge-focused Not yet recruitingThis study will look at 225 adults with diabetic retinopathy to find out how many also develop an epiretinal membrane — a thin, scar-like layer on the retina that can blur vision. Researchers will use eye scans to detect the membrane and check for related factors like age, diabet…
Sponsor: Assiut University • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:59 UTC