Inclusion Criteria:

- Children with a definite diagnosis of TSC between 4 and 15 years.

- With an IQ estimated <80 and/or special schooling and/or autism spectrum disorder
and/or learning disability requiring remedial teaching.

- Written informed consent by parents/care-takers, and the patient if he or she is 12
years or older and cognitively able to consent.

- In girls after menarche, appropriate contraception must be used or abstinence
practiced.

Exclusion Criteria:

- Hepatic dysfunction

- Surgery <6wk

- Current infection at time of inclusion

- Developmental age estimated below 3.5 years

- Intractable epilepsy with more than 1 seizure/week

- Inability to comply with the treatment protocol

- Additional diseases or disorders that may influence the endpoints, including:

- SEGA requiring treatment

- Uncontrolled diabetes mellitus

- Known impaired lung function

- Allergy for any of the components of the study medication

- Prior treatment with mTOR inhibitors

- HIV seropositivity

- Bleeding diathesis or oral anti-vitamin K medication

- Serum creatinine > 1.5 x ULN

- Uncontrolled hyperlipidemia (fasting serum cholesterol > 7.75 mmol/L, fasting serum
triglycerides > 2.5 x ULN)

- Use of investigational drug within 30 days prior to inclusion

- History of myocardial infarction, angina or stroke related to atherosclerosis, organ
transplantation, malignancy in the past 2 years

- Pregnancy or breastfeeding

- Children at risk for Hepatitis B (HB), unless hepatitis B serology is normal. Risk
groups are children who have lived in Asia, Africa, Central and South America,
Eastern Europe, Spain, Portugal, and Greece, children with known or suspected past or
current hepatitis B infection, current or prior IV illicit drug use, current or prior
dialysis, household contact with hepatitis B infected patient(s), current or prior
high-risk sexual activity, body piercing or tattoos, mother known to have hepatitis B
history. If vaccinated, presence of HBs Ab is normal.

- Known or suspected hepatitis C infection, unless hepatitis C serology is normal.