Clinical trial NCT00940602: Myelodysplastic Syndromes (MDS) Event Free Survival With Iron Chelation Therapy Study
Official title: A Multi-center, Randomized, Double-blind, Placebo-controlled Clinical Trial of Deferasirox in Patients With Myelodysplastic Syndromes (Low/Int-1 Risk) and Transfusional Iron Overload
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Myelodysplastic Syndromes
Keywords: TELESTO
MDS Study
Myelodysplastic Syndromes
Myelodysplastic Syndromes (low-int-1 risk)
Lead sponsor: Novartis
Sponsor class: INDUSTRY
First posted: 2009-07-16
Enrollment: 225
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This was a randomized, double-blind trial to evaluate deferasirox vs placebo in patients with myelodysplastic syndromes (low/int-1 risk) and transfusional iron overload .The trial was conducted in 17 countries, started in 2010 and ended in 2018.

Detailed description: This randomized, double blind trial to evaluate deferasirox vs placebo in patients with myelodysplastic syndromes (low/int-1 risk) and transfusional iron overload consisted of four periods, a screening period, a treatment period, a post treatment follow-up period and a survival period. The trial recruitment period lasted until December 2014 and the trial continued for three years from the date the last patient enrolled until February 2018 (last patient last visit date).

Screening period:

The screening period lasting up to 35 days with two screening visits, at least 14 days apart, used to assess patient eligibility. Eligible patients with low or int-1 risk myelodysplastic syndromes (MDS) with transfusional iron overload were randomized in a 2:1 ratio to deferasirox or placebo respectively. Randomization was also stratified using the International prognostic scoring system of low or int-1 MDS and by geographical region (Asian vs non-Asian countries) since the Asian population has been reported to have a longer survival.

The following concomitant medications could be permitted for use while the patient was on study, and information outlining start date(s) and end date(s) of each medication taken were to be recorded on the appropriate eCRF: Erythropoietin (growth factor), G-CSF (growth factor), GM-CSF growth factor), Azacitidine, Thalidomide, Arsenic trioxide, Lenalidomide, Decitabine, Cyclosporine A, Vitamin C supplements (≤ 200 mg/day)

Treatment period:

The dosing schedule was 10 mg/kg/day (once daily) for the first 2 weeks, followed by 20 mg/kg/day (once daily). After 3 months of treatment at the dose of 20mg/kg/day, the dose could be adjusted by 5 or 10 mg/kg/day up to 40 mg/kg/day based on the serum ferritin response. Placebo matching to each strength of the active deferasirox was utilized to maintain the double-blind trial design.

During the treatment period patients returned to the investigational site every four weeks for routine procedures and to monitor safety, efficacy and compliance to treatment.

An external Data Monitoring Committee (DMC) monitored patient safety and trial conduct and received a blinded summary of serious adverse events.

All suspected endpoint events were reviewed and adjudicated by the Endpoint Adjudication Committee (EAC) to ensure that all events that were reported were judged uniformly using the same criteria. The first confirmed suspected endpoint event for a patient was counted for the trial's composite primary endpoint, "event free survival". The composite primary endpoint, "event free survival," was defined for a patient as the date randomized to trial treatment to the date of the first documented non-fatal event, related to cardiac and liver function, transformation to AML, or death due to any cause.

When a patient had a non-fatal event, related to cardiac and liver function, and transformation to AML, the trial treatment (deferasirox or placebo) was discontinued. After trial treatment was discontinued, a 28 days post treatment safety assessment for AEs and SAEs was completed. Any patient who died during the treatment or 28 day post treatment safety assessment is represented in the all-cause mortality table in the safety section of this result. After trial treatment was discontinued for a patient, their treatment was un-blinded. Subsequent iron chelation treatment was subject to the patient's and investigator's decision. Patients continued to be followed during the post-treatment evaluation or survival follow up period, depending on their choice.

For patients who did not meet a non-fatal event, study treatment was continued as long as the patient and the treating physician felt it was in the best interest for the patient or until the trial terminated/completed. There was no un-blinding of the trial treatment for patients who terminated trial treatment without meeting a non-fatal event. Patients continued to be followed during the post-treatment evaluation or survival follow up period, depending on their choice.

A patient who discontinued study treatment without meeting a non-fatal component of the composite primary endpoint continued to be evaluated every 3 months. Once a patient stopped study evaluations they were followed for at least every 6 months for overall survival and any iron chelation therapies they are receiving up to the end of study.

Post-treatment evaluation period:

For patients who had a non-fatal event: After treatment termination, all patients were followed for safety (28 days) and then evaluated with visits every three months if they agreed to move into the post treatment evaluation phase.

For patients who did not meet a non-fatal event: After termination of study treatment, if a patient and investigator chose the post-treatment evaluation period, the patient was followed for safety and endpoints at visits occurring every three months.

Survival Follow Up period:

Subsequent to the post treatment evaluation period, or at the end of treatment period, if a patient and treating physician decided that the patient would not participate in the post treatment evaluation period, the patient was followed every 6 months for overall survival and iron chelation therapies.

The end of the study was defined as three years from the date the last patient was enrolled (last patient first visit).

The sample size of 210 patients did not provide sufficient power for testing statistical hypotheses. The statistical analysis was revised accordingly to concentrate on evaluating the treatment effect of deferasirox relative to placebo, and the study phase designation was changed from Phase lll to Phase II. Amendment 4 of the study adjusted the sample size, statistical analysis, and duration of the study and added two secondary endpoints: Hematologic improvement (HI) in terms of erythroid response and Frequency and rate of infections requiring intravenous (IV) antimicrobials. Upon approval of the amendment, patients signed a new consent form and continued the appropriate visit schedule.

Eligibility criteria: Inclusion Criteria:

* Weigh between 35-135 kilograms
* Low or int-1 risk MDS
* Ferritin \>1000 micrograms/liter at screening
* History of transfusion of 15 to 75 Packed Red Blood Cells (PRBC) units
* Anticipated to be transfused with at least 8 units of PRBCs annually during the study
* Women of child-bearing potential using effective methods of contraception during dosing of study treatment

Exclusion Criteria:

* More than 6 months of cumulative ICT (such as daily deferasirox (Exjade®) or deferiprone or 5×/week deferoxamine)
* More than 3 years since patient began receiving regular transfusions (2 units per 8 weeks or 4 units received in a 3 month period)
* Significant proteinuria
* History of hospitalization for congestive heart failure; other heart conditions as specified in the protocol
* Systemic diseases which would prevent study treatment
* Hepatitis B; Hepatitis C; HIV
* Liver cirrhosis
* Pregnant, or breast-feeding patients, or patients of child-bearing potential not employing an effective method of birth control
* History of drug or alcohol abuse within the 12 months prior to enrollment

Primary outcomes:
measure: Event-free Survival
timeFrame: Day 1 to end of treatment period, approx. 7 years
Secondary outcomes:
measure: Percentage of Participants With Hematologic Improvement (HI) in Terms of Erythroid Response
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Overall Survival
timeFrame: Day 1 to end of treatment period, approx. 7.4 years
measure: Percentage of Participants With Newly Occurring Hypothyroidism Compared to Baseline
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Percentage of Participants With Worsening Glucose Metabolism Compared to Baseline
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Time to Disease Progression
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Time to First Occurrence of Serum Ferritin Level >2 Times the Baseline Value at Two Consecutive Assessments (at Least Two Weeks Apart)
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Time to at Least a 10% Increase From Baseline in Left Ventricular End-diastolic Internal (LVIDD) at Two Consecutive Assessments at Least Two Weeks Apart
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Time to at Least a 10% Increase From Baseline in Left Ventricular Internal Systolic Diameter (LVISD) at Two Consecutive Assessments at Least Two Weeks Apart
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Total Number of Infections Requiring Intravenous Antimicrobials
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Percentage of Participants With Major Gastrointestinal Bleeding
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Percentage of Participants With Significant Renal Dysfunction
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Percentage of Participants With Newly Occurring Moderate or Severe Neutropenia
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Percentage of Participants With Newly Occurring Severe Thrombocytopenia
timeFrame: Day 1 to end of treatment period, approx. 7 years
measure: Time to Study Drug Discontinuation Due to an AE or Laboratory Abnormality
timeFrame: Day 1 to end of treatment period, approx. 7 years
Other outcomes:
Locations:
city: Anaheim
country: United States
facility: Pacific Cancer Medical Center, Inc. PAC Center
state: California
city: Greenwood Village
country: United States
facility: Rocky Mountain Cancer Centers RMCC
state: Colorado
city: Shreveport
country: United States
facility: Willis-Knighton Cancer Center Dept of Onc
state: Louisiana
city: Detroit
country: United States
facility: Henry Ford Hospital Henry Ford
state: Michigan
city: Kansas City
country: United States
facility: Midwest Cancer Care Physicians MMCC
state: Missouri
city: Manchester
country: United States
facility: Mercy Medical Research Institute SC
state: Missouri
city: Kalispell
country: United States
facility: Glacier View Research Institute - Cancer SC
state: Montana
city: Hackensack
country: United States
facility: Hackensack University Medical Center Department of Research
state: New Jersey
city: Houston
country: United States
facility: University of Texas MD Anderson Cancer Center Dept of MD Anderson (16)
state: Texas
city: San Antonio
country: United States
facility: Cancer Care Centers of South Texas HOAST CCC of So.TX- MedicalCenter(2)
state: Texas
city: Seattle
country: United States
facility: Swedish Cancer Institute Ballard Campus
state: Washington
city: Herston
country: Australia
facility: Novartis Investigative Site
state: Queensland
city: Plovdiv
country: Bulgaria
facility: Novartis Investigative Site
city: Sofia
country: Bulgaria
facility: Novartis Investigative Site
city: Varna
country: Bulgaria
facility: Novartis Investigative Site
city: Edmonton
country: Canada
facility: Novartis Investigative Site
state: Alberta
city: Winnipeg
country: Canada
facility: Novartis Investigative Site
state: Manitoba
city: Brampton
country: Canada
facility: Novartis Investigative Site
state: Ontario
city: St. Catharines
country: Canada
facility: Novartis Investigative Site
state: Ontario
city: Québec
country: Canada
facility: Novartis Investigative Site
state: Quebec
city: Guangzhou
country: China
facility: Novartis Investigative Site
state: Guangdong
city: Wuhan
country: China
facility: Novartis Investigative Site
state: Hubei
city: Nanjing
country: China
facility: Novartis Investigative Site
state: Jiangsu
city: Suzhou
country: China
facility: Novartis Investigative Site
state: Jiangsu
city: Shanghai
country: China
facility: Novartis Investigative Site
state: Shanghai
city: Tianjin
country: China
facility: Novartis Investigative Site
state: Tianjin
city: Hangzhou
country: China
facility: Novartis Investigative Site
state: Zhejiang
city: Beijing
country: China
facility: Novartis Investigative Site
city: Jinan
country: China
facility: Novartis Investigative Site
city: Shanghai
country: China
facility: Novartis Investigative Site
city: Shanghai
country: China
facility: Novartis Investigative Site
city: Copenhagen
country: Denmark
facility: Novartis Investigative Site
city: Herlev
country: Denmark
facility: Novartis Investigative Site
city: Athens
country: Greece
facility: Novartis Investigative Site
state: GR
city: Ioannina
country: Greece
facility: Novartis Investigative Site
state: GR
city: Athens
country: Greece
facility: Novartis Investigative Site
city: Patras
country: Greece
facility: Novartis Investigative Site
city: Hong Kong
country: Hong Kong
facility: Novartis Investigative Site
city: Shatin, New Territories
country: Hong Kong
facility: Novartis Investigative Site
city: Bologna
country: Italy
facility: Novartis Investigative Site
state: BO
city: Cagliari
country: Italy
facility: Novartis Investigative Site
state: CA
city: San Giovanni Rotondo
country: Italy
facility: Novartis Investigative Site
state: FG
city: Firenze
country: Italy
facility: Novartis Investigative Site
state: FI
city: Messina
country: Italy
facility: Novartis Investigative Site
state: ME
city: Pescara
country: Italy
facility: Novartis Investigative Site
state: PE
city: Reggio Calabria
country: Italy
facility: Novartis Investigative Site
state: RC
city: Orbassano
country: Italy
facility: Novartis Investigative Site
state: TO
city: Kuching
country: Malaysia
facility: Novartis Investigative Site
state: Sarawak
city: Selangor
country: Malaysia
facility: Novartis Investigative Site
city: Mexico
country: Mexico
facility: Novartis Investigative Site
state: Distrito Federal
city: México
country: Mexico
facility: Novartis Investigative Site
state: Distrito Federal
city: Auckland 6
country: New Zealand
facility: Novartis Investigative Site
city: Auckland
country: New Zealand
facility: Novartis Investigative Site
city: Auckland
country: New Zealand
facility: Novartis Investigative Site
city: Christchurch
country: New Zealand
facility: Novartis Investigative Site
city: Moscow
country: Russian Federation
facility: Novartis Investigative Site
city: Rostov on Don
country: Russian Federation
facility: Novartis Investigative Site
city: Basel
country: Switzerland
facility: Novartis Investigative Site
city: Zurich
country: Switzerland
facility: Novartis Investigative Site
city: Khon Kaen
country: Thailand
facility: Novartis Investigative Site
state: THA
city: Bangkok
country: Thailand
facility: Novartis Investigative Site
city: Bangkok
country: Thailand
facility: Novartis Investigative Site
city: Chiang Mai
country: Thailand
facility: Novartis Investigative Site
city: Glasgow
country: United Kingdom
facility: Novartis Investigative Site
state: Scotland
city: Birmingham
country: United Kingdom
facility: Novartis Investigative Site
city: Bournemouth
country: United Kingdom
facility: Novartis Investigative Site
city: Cardiff
country: United Kingdom
facility: Novartis Investigative Site
city: Exeter
country: United Kingdom
facility: Novartis Investigative Site
city: Kent
country: United Kingdom
facility: Novartis Investigative Site
city: Macclesfield
country: United Kingdom
facility: Novartis Investigative Site
city: Nottingham
country: United Kingdom
facility: Novartis Investigative Site
city: Oxford
country: United Kingdom
facility: Novartis Investigative Site
Study officials:
affiliation: Novartis Pharmaceuticals
name: Novartis Pharmaceuticals
role: STUDY_DIRECTOR
References:
citation: Angelucci E, Li J, Greenberg P, Wu D, Hou M, Montano Figueroa EH, Rodriguez MG, Dong X, Ghosh J, Izquierdo M, Garcia-Manero G; TELESTO Study Investigators. Iron Chelation in Transfusion-Dependent Patients With Low- to Intermediate-1-Risk Myelodysplastic Syndromes: A Randomized Trial. Ann Intern Med. 2020 Apr 21;172(8):513-522. doi: 10.7326/M19-0916. Epub 2020 Mar 24.