Rapid Drug Desensitization Study in Adults Experiencing Hypersensitivity Reactions to Palynziq

Study to Evaluate the Response to and Safety of an 8-Day Course of Phenoptin™ Treatment in Subjects With Phenylketonuria

A Phase 3, Multicenter, Open-Label Extension Study of Phenoptin in Subjects With PKU Who Have Elevated Phenylalanine Levels

Study of Phenoptin in Subjects With Phenylketonuria Who Participated in Protocols PKU-004 or PKU-006

Study to Evaluate the Effects of Kuvan on Individuals With Phenylketonuria (PKU) With Maladaptive Behaviors

Behavioral Effects of Kuvan in Children With Mild Phenylketonuria

The Effects of Sapropterin Dihydrochloride Supplementation on in Vivo Redox Status in Patients With Classical PKU

Study to Evaluate the Safety and Efficacy of Phenoptin™ in Subjects With Phenylketonuria Who Have Elevated Phenylalanine Levels

Nutritional and Neurotransmitter Changes in PKU Subjects on BH4

Bone Mineral Density in Adults With Hyperphenylalaninemia on Kuvan Therapy

Bone Mineral Density in Adults With Hyperphenylalaninemia

Study of Phenoptin to Increase Phenylalanine Tolerance in Phenylketonuric Children on a Phenylalanine-restricted Diet

Biological Variation of Phenylalanine in Patients With Hyperphenylalaninemia

Safety and Therapeutic Effects of Sapropterin Dihydrochloride on Neuropsychiatric Symptoms in Phenylketonuria (PKU) Patients

Neurocognitive Outcomes in Mild Hyperphenylalaninemia (MHP)MHP Study

A Pilot Study on Diurnal Variation

Effects of Kuvan on Melatonin Secretion

Safety and Tolerability Study of rAvPAL-PEG to Treat Phenylketonuria

Kuvan® in Phenylketonuria Patients Less Than 4 Years Old

The Effects of Kuvan on Functional Brain Connectivity in Individuals With Phenylketonuria (PKU)