Trial Outcomes & Findings for Phase l/II Study of Ruxolitinib for Acute Leukemia (NCT NCT01251965)

NCT ID: NCT01251965

Last Updated: 2025-06-08

Results Overview

MTD defined as highest dose level at which no more than one out of six subject experiences dose limiting toxicity (DLT) during first cycle (28 days) of therapy. A non-hematologic DLT defined as a clinically significant grade 3 or 4 adverse event or abnormal laboratory value (according to Common Toxicity Criteria for Adverse Effects (CTCAE) criteria) assessed as related to study drug (and unrelated to disease progression, intercurrent illness, or concomitant medications) occurring during first 28 days on study. Participants who received at least 80% of the originally assigned doses in the first cycle were evaluable for DLT assessment of each cohort.

Recruitment status

TERMINATED

Study phase

PHASE1/PHASE2

Target enrollment

27 participants

Primary outcome timeframe

End of first 28 day cycle for toxicity

Results posted on

2025-06-08

Participant Flow

Recruitment Period: December 9, 2010 to September 26, 2012. All recruitment done at The University of Texas (UT) MD Anderson Cancer Center.

Participant milestones

Participant milestones
Measure
Ruxolitinib 50 mg BID
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Overall Study
STARTED
4
5
18
Overall Study
COMPLETED
3
3
7
Overall Study
NOT COMPLETED
1
2
11

Reasons for withdrawal

Reasons for withdrawal
Measure
Ruxolitinib 50 mg BID
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Overall Study
Participant/physician decision
1
2
0
Overall Study
Death
0
0
11

Baseline Characteristics

Phase l/II Study of Ruxolitinib for Acute Leukemia

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Ruxolitinib 50 mg BID
n=4 Participants
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
n=5 Participants
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
n=18 Participants
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Total
n=27 Participants
Total of all reporting groups
Age, Continuous
66 years
n=5 Participants
70 years
n=7 Participants
71 years
n=5 Participants
69 years
n=4 Participants
Sex: Female, Male
Female
3 Participants
n=5 Participants
1 Participants
n=7 Participants
9 Participants
n=5 Participants
13 Participants
n=4 Participants
Sex: Female, Male
Male
1 Participants
n=5 Participants
4 Participants
n=7 Participants
9 Participants
n=5 Participants
14 Participants
n=4 Participants
Region of Enrollment
United States
4 Participants
n=5 Participants
5 Participants
n=7 Participants
18 Participants
n=5 Participants
27 Participants
n=4 Participants

PRIMARY outcome

Timeframe: End of first 28 day cycle for toxicity

MTD defined as highest dose level at which no more than one out of six subject experiences dose limiting toxicity (DLT) during first cycle (28 days) of therapy. A non-hematologic DLT defined as a clinically significant grade 3 or 4 adverse event or abnormal laboratory value (according to Common Toxicity Criteria for Adverse Effects (CTCAE) criteria) assessed as related to study drug (and unrelated to disease progression, intercurrent illness, or concomitant medications) occurring during first 28 days on study. Participants who received at least 80% of the originally assigned doses in the first cycle were evaluable for DLT assessment of each cohort.

Outcome measures

Outcome measures
Measure
Ruxolitinib 50 mg BID
n=3 Participants
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
n=3 Participants
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
n=7 Participants
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Number of Participants With Dose Limiting Toxicities (DLTs)
0 Participants
0 Participants
0 Participants

PRIMARY outcome

Timeframe: End of first 28 day cycle

The MTD is defined as the highest dose level at which no more than one out of six subject experiences DLT during the first cycle (28 days) of therapy.

Outcome measures

Outcome measures
Measure
Ruxolitinib 50 mg BID
n=13 Participants
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Maximum Tolerated Dose (MTD) of Ruxolitinib
NA mg
The Maximum tolerated dose (MTD) was not determined as there were no dose limiting toxicities (DLT's) observed at the doses tested.

SECONDARY outcome

Timeframe: Up to 1 year

Population: The study was stopped because of a lack of satisfactory clinical benefit, and did not go on to the Phase II portion. Therefore, data were not collected for this outcome measure.

Response is defined as complete remission (CR) + complete remission with incomplete blood count (CRi) + Hematologic improvement (HI). Response was to be assessed for participants who were evaluated for the Phase II portion of this study. CR is absolute neutrophil count (ANC) \>/= 1x109/L and platelet count \>/= 100x109/L, absence of leukemia blast cells, normal marrow differential, and complete resolution of extramedullary disease. CRi is CR but platelets are \< 100x109/L or ANC is \<1x109/L. HI is described by the number of individual, positively affected cell lines without the use of growth factors and/or transfusions (lasting at least 4 weeks).

Outcome measures

Outcome data not reported

Adverse Events

Ruxolitinib 50 mg BID

Serious events: 4 serious events
Other events: 4 other events
Deaths: 0 deaths

Ruxolitinib 100 mg BID

Serious events: 5 serious events
Other events: 5 other events
Deaths: 0 deaths

Ruxolitinib 200 mg BID

Serious events: 18 serious events
Other events: 18 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Ruxolitinib 50 mg BID
n=4 participants at risk
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
n=5 participants at risk
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
n=18 participants at risk
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Gastrointestinal disorders
Abdominal pain
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Alveolar hemorrhage
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Cerebral edema and mass
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Death
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
61.1%
11/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Metabolism and nutrition disorders
Dehydration
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Dyspnea
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Blood and lymphatic system disorders
Febrile neutropenia
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Fever
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Headache
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Hemoptysis
75.0%
3/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Hypoxia
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Mucositis
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Neutropenia
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Pain
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Pneumonia
50.0%
2/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
60.0%
3/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Respiratory failure
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Skin and subcutaneous tissue disorders
Skin ulceration
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Stroke
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Cardiac disorders
Tachycardia
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Blood and lymphatic system disorders
Thrombocytopenia
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.

Other adverse events

Other adverse events
Measure
Ruxolitinib 50 mg BID
n=4 participants at risk
Phase I starting dose of Ruxolitinib 50 mg by mouth twice a day (BID) for 28 day cycle.
Ruxolitinib 100 mg BID
n=5 participants at risk
Phase I dose of Ruxolitinib 100 mg by mouth twice a day for 28 day cycle.
Ruxolitinib 200 mg BID
n=18 participants at risk
Phase I dose of Ruxolitinib 200 mg by mouth twice a day for 28 day cycle.
Investigations
Hemoglobin Increased
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Neutrophils count decreased
50.0%
2/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
33.3%
6/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Platelets decreased
50.0%
2/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
60.0%
3/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
33.3%
6/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Cardiac disorders
Ventricular arrhythmia
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Fatigue
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Skin and subcutaneous tissue disorders
Rash
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Gastrointestinal disorders
Constiptation
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Gastrointestinal disorders
Diarrhea
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Gastrointestinal disorders
Mucositis
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
16.7%
3/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Gastrointestinal disorders
Nausea
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Hemorrhage pulmonary
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Edema: head and neck
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Edema: limb
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Alkaline phosphatase Increased
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Alanine aminotransferase increased (ALT)
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
22.2%
4/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Aspartate aminotransferase increased (AST)
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Blood bilirubin increased
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Investigations
Creatinine Increased
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
22.2%
4/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Metabolism and nutrition disorders
Hypercalcemia
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Musculoskeletal and connective tissue disorders
Muscle weakness
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Central Nervous System Ischemia
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Dizziness
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Neurology-Other Issues
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Speech impairment
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Nervous system disorders
Tremor
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
General disorders
Pain
25.0%
1/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
11.1%
2/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Dyspnea
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
20.0%
1/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
Pleural effusion
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Respiratory, thoracic and mediastinal disorders
PULMONARY INFILTRATES
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Reproductive system and breast disorders
Hot Flash
0.00%
0/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
0.00%
0/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
5.6%
1/18 • Adverse events collected during 28 day cycle, up to 9 cycles.
Infections and infestations
Infections
100.0%
4/4 • Adverse events collected during 28 day cycle, up to 9 cycles.
40.0%
2/5 • Adverse events collected during 28 day cycle, up to 9 cycles.
100.0%
18/18 • Adverse events collected during 28 day cycle, up to 9 cycles.

Additional Information

Srdan Verstovsek, Professor, Leukemia

The University of Texas (UT) MD Anderson Cancer Center

Phone: 713-792-7734

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place