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Efficacy and Safety of Everolimus (RAD001) in Patients of All Ages With Subependymal Giant Cell Astrocytoma Associated With Tuberous Sclerosis Complex (TSC)(EXIST-1) (EXIST-1)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Novartis ( Novartis Pharmaceuticals )
ClinicalTrials.gov Identifier:
NCT00789828
First received: November 12, 2008
Last updated: January 4, 2016
Last verified: January 2016
History of Changes
  Purpose
This study evaluated the efficacy and safety of Everolimus in treating patients with Subependymal Giant Cell Astrocytomas associated with Tuberous Sclerosis Complex.

Condition Intervention Phase
Tuberous Sclerosis
Subependymal Giant Cell Astrocytoma
 Drug: Everolimus
Drug: Placebo
 Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomized, Double-blind, Placebo-controlled Study of Everolimus in the Treatment of Patients With Subependymal Giant Cell Astrocytomas (SEGA) Associated With Tuberous Sclerosis Complex (TSC)

Resource links provided by NLM:

U.S. FDA Resources

Further study details as provided by Novartis:

Primary Outcome Measures:
  • Percentage of Participants With Best Overall Subependymal Giant Cell Astrocytomas (SEGA) Response [ Time Frame: End of core period (Week 48), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Participants were assessed for SEGA response, defined as 50% reduction from baseline in SEGA volume (where SEGA volume was the sum of the volumes of all target SEGA lesions identified at baseline, and confirmed with a second scan performed approximately 12 weeks later), no unequivocal worsening of non-target SEGA lesions, no new SEGA lesions (≥ 1 cm in longest diameter), and no new or worsening hydrocephalus. Multi-phase brain MRI was utilized to identify SEGA lesions. SEGA response rate was defined as the percentage of participants whose best overall status was SEGA response as determined by Independent Central Radiology Review. The Kaplan-Meier estimate was used for determining time to SEGA response.


Secondary Outcome Measures:
  • Change From Baseline in Frequency of Total Seizure Events Per 24 Hours at Week 24 in Both Core and Extension Period [ Time Frame: Baseline (Core period) to Week 24 (Core period), Baseline (Extension period, Week 24 post-core baseline) to Week 24 (Extension period, Week 48 post-core baseline) ] [ Designated as safety issue: No ]
    Seizure frequency per 24 hours was defined as the number of seizures in the electroencephalography (EEG) divided by the number of hours in the EEG, multiplied by 24. Seizure frequency was evaluated using a 24-hour video-EEG. Seizure frequency was listed as missing if the actual EEG recording duration was < 18 hours.

  • Time to SEGA Progression [ Time Frame: Baseline up to week 48 (end of core period), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Time to SEGA progression was defined as time between randomisation to time to first SEGA progression. SEGA progression was defined as either one or more of the following criteria: 1. increase from nadir of ≥ 25% in SEGA volume to a value greater than baseline SEGA volume (where SEGA volume is the sum of the volumes of all target SEGA lesions identified at baseline, and nadir is the lowest SEGA volume obtained for the participant previously in the trial), 2. unequivocal worsening of non-target SEGA lesions, 3. appearance of new SEGA lesion ≥ 1.0 cm in longest diameter, 4. new or worsening hydrocephalus. The median TTSP based on central radiology review was not reached in any treatment arms; Only 6 events of SEGA progressions were observed in the placebo group of core period.

  • Time to SEGA Response [ Time Frame: Baseline up to week 48 (end of core period), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Participants were assessed for time to SEGA response, defined as 50% reduction from baseline in SEGA volume (where SEGA volume was the sum of the volumes of all target SEGA lesions identified at baseline, and confirmed with a second scan performed approximately 12 weeks later), no unequivocal worsening of non-target SEGA lesions, no new SEGA lesions (≥ 1 cm in longest diameter), and no new or worsening hydrocephalus. Multi-phase brain MRI was utilised to identify SEGA lesions. SEGA response rate was defined as the percentage of participants whose best overall status was SEGA response as determined by Independent Central Radiology Review. The Kaplan-Meier estimate was used for determining time to SEGA response.

  • Duration of SEGA Response [ Time Frame: Baseline up to week 48 (end of core period), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Duration of SEGA response was defined as time from the date of the first documented SEGA response until the date of the first documented SEGA progression. Duration of SEGA response was evaluated only for participants who achieved a SEGA response. The time to SEGA progression was censored if SEGA progression was not observed before the first to occur out of (i) analysis cut-off date (ii) the date when systemic anti-SEGA medication is started, (iii) the date of a SEGA-related surgery or (iv) the date of death. Since, no case of SEGA progression was observed in core study which resulted in censored duration of SEGA response. Only 5 SEGA responders experienced a SEGA progression in extension period.

  • Time to SEGA Worsening [ Time Frame: Baseline up to week 48 (end of core period), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Time to SEGA worsening was defined as the time from the start of everolimus to date of the first SEGA worsening. SEGA worsening was defined as either; increase from nadir of ≥ 25% in SEGA volume or unequivocal worsening of non-target SEGA lesions, or appearance of new SEGA lesion ≥ 1.0 cm in longest diameter, or new or worsening hydrocephalus. The median value was not reached in either treatment arm of core period as SEGA worsening was observed in less participants (everolimus - 7 and placebo - 8).

  • Percentage of Participants With Skin Lesions Assessed Using Physician's Global Assessement Overall Score [ Time Frame: End of core period (Week 48), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Skin lesions included hypomelanotic macules, the shagreen patch, periungual or subungual fibromas, facial angiofibromas and/or forehead plaques. Response was evaluated using the Physician's Global Assessment of Clinical Condition (PGA) on a 7-point scale: Grade 0 = complete clinical response, indicated absence of disease, Grade 1, 2, and 3 = partial response, indicated improvements of ≥ 50% but < 100%, Grade 4, 5 = stable disease, indicated some or no improvements of 25% - < 50% and 6 = progressive disease, indicated worse than at baseline evaluation by > 25%. Response rate was determined for participants with ≥ 1 skin lesion at baseline, defined as the percentage of participants with overall status as complete clinical response or partial response.

  • Duration of Skin Lesion Response in Everolimus Treated Participants [ Time Frame: Baseline up to week 48 (end of core period), and end of extension period (up to 4 years) ] [ Designated as safety issue: No ]
    Duration of skin lesion response was defined as the time from the first skin lesion response until the first skin lesion progression, defined as worsening of lesion by > 25% or more from baseline.

  • Everolimus Blood Concentration (C2h) at 2 Hours Post Dose [ Time Frame: 2 hours post dose on Week 6, Week 24, Week 48, Week 96, Week 144, and Week 240 ] [ Designated as safety issue: Yes ]
    The participants were assessed for everolimus blood concentration at 2 hours time point after dose administration on the same day, if the participant did not vomit between previous dose and blood sample collection. Tandem liquid chromatography-mass spectrometry method was used for evaluation. C2h values were categorized as < 20 ng/mL, 20-50 ng/mL, and > 50 ng/mL, concentrations below the lower limit of quantification were entered as 0 ng/mL.

  • Everolimus Trough Concentrations (Cmin) at 24 Hours After Last Dose [ Time Frame: 24 hours post dose on Week 6, Week 24, Week 48, Week 72, Week 96, Week 144, and Week 240 ] [ Designated as safety issue: Yes ]
    The participants were assessed for everolimus trough concentration (Cmin) at 24 hours time point after previous dose administration, at a steady state following 5 days of consistent dosing, if the participant did not vomit within 4 hours of previous dose. Tandem liquid chromatography-mass spectrometry method was used for evaluation. Cmin values were categorized as <5 ng/mL, 5-10 ng/mL, and >10 ng/mL, concentrations below the lower limit of quantification were entered as 0 ng/mL.

  • Percentage of Participants With Renal Impairment During Core Period [ Time Frame: Day 1 up to 28 days after end of treatment (Core period) ] [ Designated as safety issue: Yes ]
    Renal function was assessed using glomerular filtration rate (GFR) based on age measure; Modification of Diet in Renal Disease (MDRD) formula for participants aged 18 years or older, defined as GFR equal to 32788*(serum creatinine (micromol/L)^-1.154)*(age^-0.203 )*(0.742, if female)*(1.210, if black), and Schwartz formula for participants less than 18 years defined as GFR equal to 0.41*height (cm)/ Serum creatinine (mg/dL). Participants with severe renal impairment defined as GFR < 30 mL/min/1.73 m^2 and participants with National Cancer Institute's Common Terminology Criteria for Adverse Events (NCI-CTCAE) grade 3/4 serum creatinine were reported.
Enrollment: 117
Study Start Date: August 2009
Study Completion Date: October 2014
Primary Completion Date: March 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Everolimus
Everolimus was administered orally at a starting dose of 4.5mg/m^2 daily and subsequently titrated to attain whole blood trough concentration of 5 to 15 ng/mL. Dose adjustments were permitted based on safety and whole blood trough concentrations.
 Drug: Everolimus
Everolimus was formulated as tablets of 1.0-mg strength and was blisterpacked under aluminum foil in units of 10 tablets.
Other Name: RAD001
Placebo Comparator: Placebo
Matching Placebo administered orally.
 Drug: Placebo
Placebo was provided as a matching tablet and was blisterpacked under aluminum foil in units of 10.

  Eligibility
Ages Eligible for Study:   Child, Adult, Senior
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • All Ages
  • Definite diagnosis of Tuberous Sclerosis according to the modified Gomez criteria
  • At least one Subependymal Giant Cell Astrocytoma of at least 1 cm in diameter
  • Evidence of SEGA worsening as compared to prior MRI scans
  • Females of child bearing potential must use birth control
  • Written informed consent

Exclusion Criteria:

  • SEGA related surgery is likely to be required in the opinion of the investigator
  • Recent heart attack, cardiac related chest pain or stroke
  • Severely impaired lung function
  • Severe liver dysfunction
  • Severe kidney dysfunction
  • Pregnancy or breast feeding
  • Current infection
  • History of organ transplant
  • Surgery within two months prior to study enrollment
  • Prior therapy with a medication in the same class as Everolimus
  • Uncontrolled high cholesterol
  • Uncontrolled diabetes
  • HIV
  • Patients with metal implants thus prohibiting MRI evaluations

Other protocol-defined inclusion/exclusion criteria may apply

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00789828

  Show 24 Study Locations
Sponsors and Collaborators
Novartis Pharmaceuticals
Investigators
Study Director: Novartis Pharmaceuticlas Novartis Pharmaceuticals
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Responsible Party: Novartis Pharmaceuticals
ClinicalTrials.gov Identifier: NCT00789828     History of Changes
Other Study ID Numbers: CRAD001M2301  2007-006997-27 
Study First Received: November 12, 2008
Results First Received: March 1, 2012
Last Updated: January 4, 2016
Health Authority: United States: Food and Drug Administration
Belgium: Federal Agency for Medicines and Health Products, FAMHP
Germany: Federal Institute for Drugs and Medical Devices
Italy: Ministry of Health
Netherlands: Medicines Evaluation Board (MEB)
Poland: Office for Registration of Medicinal Products, Medical Devices and Biocidal Products
United Kingdom: Medicines and Healthcare Products Regulatory Agency
Australia: Department of Health and Ageing Therapeutic Goods Administration

Keywords provided by Novartis:
SEGA
Tuberous Sclerosis
Subependymal Giant Cell Astrocytoma
mTOR
 RAD001
Mamalian Target Rapamycin
Everolimus
TSC

Additional relevant MeSH terms:
Sclerosis
Tuberous Sclerosis
Astrocytoma
Pathologic Processes
Glioma
Neoplasms, Neuroepithelial
Neuroectodermal Tumors
Neoplasms, Germ Cell and Embryonal
Neoplasms by Histologic Type
Neoplasms
Neoplasms, Glandular and Epithelial
Neoplasms, Nerve Tissue
Hamartoma
Neoplasms, Multiple Primary
Neoplastic Syndromes, Hereditary
 Malformations of Cortical Development, Group I
Malformations of Cortical Development
Nervous System Malformations
Nervous System Diseases
Neurocutaneous Syndromes
Heredodegenerative Disorders, Nervous System
Neurodegenerative Diseases
Congenital Abnormalities
Genetic Diseases, Inborn
Everolimus
Sirolimus
Antineoplastic Agents
Immunosuppressive Agents
Immunologic Factors
Physiological Effects of Drugs

ClinicalTrials.gov processed this record on September 28, 2016