Study type

Study topic

Human medicinal product
Disease /health condition

Study type

Non-interventional study

Scope of the study

Assessment of risk minimisation measure implementation or effectiveness
Drug utilisation
Safety study (incl. comparative)

Data collection methods

Primary data collection
Non-interventional study

Non-interventional study design

Other

Non-interventional study design, other

Observational, multicentre, drug registry study
Study drug and medical condition

Study drug International non-proprietary name (INN) or common name

SAPROPTERIN DIHYDROCHLORIDE

Medical condition to be studied

Phenylketonuria
Tetrahydrobiopterin deficiency
Population studied

Short description of the study population

Subjects treated with Kuvan®.
The following inclusion and exclusion criteria must have been fulfilled:
Inclusion criteria
• Adult or paediatric patients (no age limit) of either gender with HPA due to PKU or BH4 deficiency,
• Have been shown to be responsive to BH4 or Kuvan,
• Currently being treated with Kuvan at a participating site,
• Patient or parent/legal guardian willing and able to provide written, signed informed consent and to give consent before any data collection. If a child is old enough to read and write, a separate assent form was given.
Exclusion criteria
• Known hypersensitivity to Kuvan,
• Legal incapacity or limited legal capacity without legal guardian representation,
• Breast-feeding.

Age groups

Preterm newborn infants (0 – 27 days)
Term newborn infants (0 – 27 days)
Infants and toddlers (28 days – 23 months)
Children (2 to < 12 years)
Adolescents (12 to < 18 years)
Adults (18 to < 46 years)
Adults (46 to < 65 years)
Adults (65 to < 75 years)
Adults (75 to < 85 years)
Adults (85 years and over)

Special population of interest

Renal impaired
Hepatic impaired
Pregnant women

Estimated number of subjects

625
Study design details

Main study objective

The primary objective is to assess the long-term safety in subjects treated with Kuvan

Outcomes

The primary endpoint: Incidence and description of Adverse events and Serious Adverse Events (AE/SAEs), Secondary endpoints: Incidence of AEs/SAEs in specific populations elderly (65 years), children and subjects with renal or hepatic insufficiency. Description of somatic growth in BH4 deficient children <3 years, Neurocognitive outcomes, Neurological and psychiatric assessment, Diet and Kuvan treatment adherence, Long-term sensitivity to Kuvan treatment, Pregnancy outcomes and delivery outcomes.

Data analysis plan

Interim analyses will be performed annually. Each interim analysis will include cross-sectional analyses of data regarding the safety and other outcomes such as clinical parameters, laboratory parameters or neurocognitive outcomes. For each variable, descriptive statistics from the current and previous annual analysis will be included in the interim report. Analyses will be descriptive. Confidence intervals will be provided for the primary endpoints and for secondary endpoints when relevant.
Documents
Study results
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