Page last updated: 2024-10-19

phenylacetic acid and Ornithine Carbamoyltransferase Deficiency Disease

phenylacetic acid has been researched along with Ornithine Carbamoyltransferase Deficiency Disease in 10 studies

phenylacetic acid : A monocarboxylic acid that is toluene in which one of the hydrogens of the methyl group has been replaced by a carboxy group.

Ornithine Carbamoyltransferase Deficiency Disease: An inherited urea cycle disorder associated with deficiency of the enzyme ORNITHINE CARBAMOYLTRANSFERASE, transmitted as an X-linked trait and featuring elevations of amino acids and ammonia in the serum. Clinical features, which are more prominent in males, include seizures, behavioral alterations, episodic vomiting, lethargy, and coma. (Menkes, Textbook of Child Neurology, 5th ed, pp49-50)

Research Excerpts

ExcerptRelevanceReference
"We report the results of a 25-year, open-label, uncontrolled study of sodium phenylacetate and sodium benzoate therapy (Ammonul, Ucyclyd Pharma) in 299 patients with urea-cycle disorders in whom there were 1181 episodes of acute hyperammonemia."5.12Survival after treatment with phenylacetate and benzoate for urea-cycle disorders. ( Berry, GT; Berry, SA; Brusilow, SW; Enns, GM; Hamosh, A; Rhead, WJ, 2007)
"Patients with neonatal urea cycle defects (UCDs) typically experience severe hyperammonemia during the first days of life, which results in serious neurological injury or death."3.88Prenatal treatment of ornithine transcarbamylase deficiency. ( Akula, VP; Alcorn, D; Benitz, WE; Bernstein, JA; Berquist, WE; Blumenfeld, YJ; Castillo, RO; Concepcion, W; Cowan, TM; Cox, KL; Cusmano, K; Enns, GM; Esquivel, CO; Hintz, SR; Homeyer, M; Hudgins, L; Hurwitz, M; Lyell, DJ; Palma, JP; Schelley, S; Summar, ML; Wilnai, Y, 2018)
"Girls with symptomatic ornithine transcarbamylase deficiency who are treated with drugs that activate new pathways of waste-nitrogen excretion have fewer hyperammonemic episodes and a reduced risk of further cognitive decline."2.68Long-term treatment of girls with ornithine transcarbamylase deficiency. ( Bassett, SS; Brusilow, SW; Clissold, DB; Maestri, NE, 1996)
" Ambiguous medical prescriptions and inadequate cross-checking of drug dosage by physicians, nurses and pharmacists were the main causes of these incidents."1.31Three cases of intravenous sodium benzoate and sodium phenylacetate toxicity occurring in the treatment of acute hyperammonaemia. ( Boyadjiev, SA; Brusilow, SW; Geraghty, MT; Praphanphoj, V; Waber, LJ, 2000)
" In the child, when the benzoate/phenylacetate dosage was increased from 200 to 375 mg/kg/day each, feeding decreased."1.27Effect of sodium benzoate and sodium phenylacetate on brain serotonin turnover in the ornithine transcarbamylase-deficient sparse-fur mouse. ( Batshaw, ML; Coyle, JT; Hyman, SL; Mellits, ED; Quaskey, S; Qureshi, IA; Robinson, MB, 1988)

Research

Studies (10)

TimeframeStudies, this research(%)All Research%
pre-19902 (20.00)18.7374
1990's2 (20.00)18.2507
2000's3 (30.00)29.6817
2010's3 (30.00)24.3611
2020's0 (0.00)2.80

Authors

AuthorsStudies
Wilnai, Y1
Blumenfeld, YJ1
Cusmano, K1
Hintz, SR1
Alcorn, D1
Benitz, WE1
Berquist, WE1
Bernstein, JA1
Castillo, RO1
Concepcion, W1
Cowan, TM1
Cox, KL1
Lyell, DJ1
Esquivel, CO1
Homeyer, M1
Hudgins, L1
Hurwitz, M1
Palma, JP1
Schelley, S1
Akula, VP1
Summar, ML1
Enns, GM2
Nagasaka, H1
Yorifuji, T1
Kobayashi, K1
Takikawa, H1
Komatsu, H1
Inui, A1
Fujisawa, T1
Miida, T1
Tsukahara, H1
Takatani, T1
Hayashi, H1
Houston, B1
Reiss, KA1
Merlo, C1
Scaglia, F1
Carter, S1
O'Brien, WE1
Lee, B1
Berry, SA1
Berry, GT1
Rhead, WJ1
Brusilow, SW4
Hamosh, A1
Danney, M1
Waber, LJ2
Batshaw, M1
Burton, B1
Levitsky, L1
Roth, K1
McKeethren, C1
Ward, J1
Maestri, NE1
Clissold, DB1
Bassett, SS1
Thoene, JG1
Praphanphoj, V1
Boyadjiev, SA1
Geraghty, MT1
Batshaw, ML1
Hyman, SL1
Coyle, JT1
Robinson, MB1
Qureshi, IA1
Mellits, ED1
Quaskey, S1

Clinical Trials (1)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
A Phase 2, Open-Label, Switch-Over, Dose-Escalation Study of the Safety and Tolerability of HPN-100 Compared to Buphenyl® (Sodium Phenylbutyrate) in Patients With Urea Cycle Disorders[NCT00551200]Phase 214 participants (Actual)Interventional2007-10-31Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

Number of Subjects Experienced Adverse Events

(NCT00551200)
Timeframe: during the period on 100% Buphenyl (up to 4 weeks) or HPN-100 (up to 10 weeks)

Interventionparticipants (Number)
Buphenyl7
HPN-1005

Number of Subjects Experienced Serious Adverse Events

(NCT00551200)
Timeframe: during the period subjects on 100% Buphenyl (up to 4 weeks) or HPN-100 (up to 10 weeks)

Interventionparticipants (Number)
Buphenyl1
HPN-1000

Drug Preference for HPN-100 or Buphenyl® (as Assessed by Global Preference Question)

(NCT00551200)
Timeframe: End of Study

Interventionparticipants (Number)
prefer Buphenylprefer HPN-100
Buphenyl to HPN-10019

Pharmacokinetics (Plasma and Urine PK Parameters of Study Drugs and Their Metabolites)

measured AUC0-24 (Area under the curve from time 0 (pre-dose) to 24 hours) for each metabolite in plasma. Data were collected at 30 minutes and 1, 2, 4, 5, 6, 8, 10, 12, and 24 hours post-first dose. (NCT00551200)
Timeframe: At steady state (1 week) on each medication (Buphenyl® alone, HPN-100 alone)

,
Interventionμg*h/mL (Mean)
AUC0-24 PBA (phenylbutyrate) in plasmaAUC0-24 PAA (phenylacetate) in plasmaAUC0-24 PAGN (phenylacetylglutamine) in plasma
HPN-100 Steady State5405751098
NaPBA Steady State7405961133

Venous Ammonia Levels at the Peak and Mean TNUAC Time-normalized Area Under the Curve)

Data were collected at pre-first dose and at 30 minutes and 1, 2, 4, 5, 6, 8, 10, 12, and 24 hours post first dose. (NCT00551200)
Timeframe: At steady state (1 week) on each medication (Buphenyl® alone, HPN-100 alone), and at steady state (1 week) after each dose escalation

,
Interventionμmol/L (Mean)
in peakin TNAUC (time-normalized area under the curve)
HPN-100 Steady State56.326.5
NaPBA Steady State79.138.4

Reviews

1 review available for phenylacetic acid and Ornithine Carbamoyltransferase Deficiency Disease

ArticleYear
Treatment of urea cycle disorders.
    The Journal of pediatrics, 1999, Volume: 134, Issue:3

    Topics: Amino Acid Metabolism, Inborn Errors; Ammonia; Antimetabolites; Child, Preschool; Drug Combinations;

1999

Trials

2 trials available for phenylacetic acid and Ornithine Carbamoyltransferase Deficiency Disease

ArticleYear
Survival after treatment with phenylacetate and benzoate for urea-cycle disorders.
    The New England journal of medicine, 2007, May-31, Volume: 356, Issue:22

    Topics: Adolescent; Adult; Age Factors; Age of Onset; Amino Acid Metabolism, Inborn Errors; Ammonia; Carbamo

2007
Long-term treatment of girls with ornithine transcarbamylase deficiency.
    The New England journal of medicine, 1996, Sep-19, Volume: 335, Issue:12

    Topics: Adolescent; Amino Acid Metabolism, Inborn Errors; Ammonia; Benzoates; Benzoic Acid; Brain Diseases;

1996

Other Studies

7 other studies available for phenylacetic acid and Ornithine Carbamoyltransferase Deficiency Disease

ArticleYear
Prenatal treatment of ornithine transcarbamylase deficiency.
    Molecular genetics and metabolism, 2018, Volume: 123, Issue:3

    Topics: Ammonia; Drug Combinations; Female; Glutamine; Humans; Hyperammonemia; Infant, Newborn; Male; Mutati

2018
Favorable effect of 4-phenylacetate on liver functions attributable to enhanced bile salt export pump expression in ornithine transcarbamylase-deficient children.
    Molecular genetics and metabolism, 2010, Volume: 100, Issue:2

    Topics: Adenosine Triphosphatases; Adolescent; Arginine; ATP Binding Cassette Transporter, Subfamily B, Memb

2010
Healthy, but comatose.
    The American journal of medicine, 2011, Volume: 124, Issue:4

    Topics: Adult; Brain Edema; Carbohydrates; Enteral Nutrition; Glucose; Humans; Hyperammonemia; Insulin; Male

2011
Effect of alternative pathway therapy on branched chain amino acid metabolism in urea cycle disorder patients.
    Molecular genetics and metabolism, 2004, Volume: 81 Suppl 1

    Topics: Adolescent; Adult; Amino Acid Metabolism, Inborn Errors; Amino Acids, Branched-Chain; Citrullinemia;

2004
Treatment of episodic hyperammonemia in children with inborn errors of urea synthesis.
    The New England journal of medicine, 1984, Jun-21, Volume: 310, Issue:25

    Topics: Amino Acid Metabolism, Inborn Errors; Ammonia; Arginine; Argininosuccinate Synthase; Benzoates; Benz

1984
Three cases of intravenous sodium benzoate and sodium phenylacetate toxicity occurring in the treatment of acute hyperammonaemia.
    Journal of inherited metabolic disease, 2000, Volume: 23, Issue:2

    Topics: Child; Child, Preschool; Drug Overdose; Fatal Outcome; Female; Humans; Injections, Intravenous; Male

2000
Effect of sodium benzoate and sodium phenylacetate on brain serotonin turnover in the ornithine transcarbamylase-deficient sparse-fur mouse.
    Pediatric research, 1988, Volume: 23, Issue:4

    Topics: Administration, Oral; Amino Acid Metabolism, Inborn Errors; Ammonia; Animals; Benzoates; Benzoic Aci

1988