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Study to Determine the Safety and Efficacy of INCB018424 in Patients With Polycythemia Vera or Essential Thrombocythemia

A Phase 2, Open Label, Dose Regimen Ranging Clinical Study to Determine the Safety and Efficacy of INCB018424 in Patients With Advanced Polycythemia Vera or Essential Thrombocythemia Refractory to Hydroxyurea

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00726232
Enrollment
73
Registered
2008-07-31
Start date
2008-08-20
Completion date
2018-08-20
Last updated
2025-10-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myeloproliferative Neoplasm (MPN)

Brief summary

To evaluate the safety and efficacy profile of different treatment regimens of Ruxolitinib (INCB018424) administered to two groups of patients; those with polycythemia vera (PV) and those with essential thrombocythemia (ET). Patients in each group were refractory to hydroxyurea or for whom hydroxyurea is contraindicated.

Detailed description

The study consisted of a 2-stage design, which included a dose-ranging phase (during which patients received treatment at their randomized dose) and an expansion phase (after adjustment of dose/regimen to achieve an optimal balance of efficacy and safety). During the dose-ranging phase, patients in each disease group (PV or ET) were randomly assigned in a 1:1:1 ratio independent of each other to receive 1 of 3 treatment regimens with Ruxolitinib, 10 mg twice daily (bid), 25 mg bid, or 50 mg once daily (qd). After patients completed 2 cycles of treatment with Ruxolitinib at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis using their discretion in order to achieve an optimal balance of efficacy and safety. During the expansion phase (ie, after optimization of dose), additional patients with PV or ET were enrolled to receive Ruxolitinib at the dose that was selected upon review of data from the dose-ranging phase. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.

Interventions

DRUGRuxolitinib

Ruxolitinib was administered orally and supplied as 5 mg and 25 mg tablets.

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Confirmed diagnosis of polycythemia vera or essential thrombocythemia as determined by treating physician * Disease refractory to hydroxyurea or for whom treatment with hydroxyurea is contraindicated or have refused further treatment with hydroxyurea due to side effects. * Patient meets baseline clinical lab parameters

Exclusion criteria

* Treatment with interferon alpha or anagrelide within 7 days and hydroxyurea within 1 day of starting INCB018424. * Patients diagnosed with another malignancy unless the malignancy was cervical intraepithelial neoplasia or basal or squamous cell skin cancer and the patient has been disease free for \> 3 years * Patients receiving therapy with intermediate or high dose steroids greater than the equivalent of 10 mg prednisone per day * Clinically significant cardiac disease (New York Heart Association (NYHA) Class III or IV)

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Polycythemia Vera Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)Assessed after 2 cycles (56 days) of treatment on Day 1 of Cycle 3For a confirmed response all criteria must have been sustained for at least 2 months. CR: * Hematocrit \< 45% in men and \< 42% in women * No phlebotomy for 1 month * No palpable splenomegaly * White blood cells \< 10 x 10\^9/L with normal differential and platelets \< 400 x 10\^9/L * No sustained leucopenia or thrombocytopenia (\>2 weeks) * No systemic PV symptoms (pruritus, night sweats, bone pain, fever, weight loss) PR: * Hematocrit \< 45% in men and \< 42% in women * 50% reduction in phlebotomy requirements from 6 months before treatment started * 50% reduction in palpable splenomegaly
Percentage of Essential Thrombocythemia (ET) Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)Assessed after 2 cycles (56 days) of treatment on Day 1 of Cycle 3.For a confirmed response all criteria must have been sustained for at least 2 months. Complete Clinical Response: * Platelet count \< 400 x 10\^9/L * White blood cell count \< 10 x 10\^9/L with normal differential and Hematocrit ≤ upper limit of normal * Absence of sustained (\> 2 weeks) anemia or leucopenia based on institutional normal ranges * Absence of systemic ET symptoms (pruritus, bone pain, weakness, night sweats, paresthesias) * Absence of palpable splenomegaly Partial Clinical Response: * Platelet count \< 400 x 10\^9/L * 50% reduction in palpable splenomegaly

Secondary

MeasureTime frameDescription
Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksBaseline and Week 36 (Cycle 10, Day 1)The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L
Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksBaseline and 4 weeks (Cycle 2, Day 1)The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly
Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksBaseline and 24 weeks (Cycle 7, Day 1)The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly
Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksBaseline and Week 12 (Cycle 4, Day 1)The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L
Change From Baseline to Week 4 in Polycythemia Vera SymptomsBaseline and Week 4 (Cycle 2, Day 1)Patients were asked to rate their symptoms on a scale of 0 (none) to 10 (worse possible) for the prior week giving the worst level of symptoms experienced during the preceding 7 days. A negative change from baseline score indicates improvement in symptoms. For patients with Polycythemia Vera, queried symptoms included fever, itching/pruritus, bone pain and night sweats.
Change From Baseline to Week 4 in Essential Thrombocythemia SymptomsBaseline and Week 4 (Cycle 2, Day 1)Patients were asked to rate their symptoms on a scale of 0 (none) to 10 (worse possible) for the prior week giving the worst level of symptoms experienced during the preceding 7 days. A negative change from baseline score indicates improvement in symptoms. For patients with essential thrombocythemia, queried symptoms included itching/pruritus, bone pain, night sweats, paresthesias (tingling or numbness), and weakness.
Change From Baseline to Week 4 in Health-related Quality of LifeBaseline and Week 4 (Cycle 2, Day 1)Health-related Quality of Life was assessed using the Global Health Status/Quality of Life Scale of the European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30). This scale ranges from 0 to 100, with higher scores indicating higher quality of life.
Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksBaseline and 36 weeks (Cycle 10, Day 1)The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly
Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksBaseline and Week 24 (Cycle 7, Day 1)The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L

Countries

Italy, United States

Participant flow

Recruitment details

This was a multicenter study with 2 sites in the United States and 4 sites in Italy.

Participants by arm

ArmCount
PV: Ruxolitinib 10 mg BID
Participants with Polycythemia Vera received 10 mg Ruxolitinib orally twice a day (BID) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
19
PV: Ruxolitinib 25 mg BID
Participants with Polycythemia Vera received 25 mg Ruxolitinib orally twice a day (BID) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
8
PV: Ruxolitinib 50 mg QD
Participants with Polycythemia Vera received 50 mg Ruxolitinib orally once a day (QD) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
7
ET: Ruxolitinib 10 mg BID
Participants with Essential Thrombocythemia received 10 mg Ruxolitinib orally twice a day (BID) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
8
ET: Ruxolitinib 25 mg BID
Participants with Essential Thrombocythemia received 25 mg Ruxolitinib orally twice a day (BID) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
22
ET: Ruxolitinib 50 mg QD
Participants with Essential Thrombocythemia received 50 mg Ruxolitinib orally once a day (QD) for 56 days (two 28-day cycles) during the dose-ranging phase. After patients completed 2 cycles of treatment at the randomized dose, Investigators were permitted to adjust the dose/regimen on an individual basis to achieve an optimal balance of efficacy and safety. Treatment continued until a patient met a withdrawal criterion, had intolerable toxicity, progression of disease, or withdrew consent.
9
Total73

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007
Expansion PhaseAdverse Event000000611
Expansion PhaseDeath00000001
Expansion PhaseDisease progression00000040
Expansion PhasePer Investigator: lack of response00000017
Expansion PhaseTermination of the trial by sponsor0000001016
Expansion PhaseUnspecified reason00000010
Expansion PhaseWithdrawal by Subject00000023
Initial Phase (Dose-finding)Adverse Event22217300
Initial Phase (Dose-finding)Death00001000
Initial Phase (Dose-finding)Disease progression31000000
Initial Phase (Dose-finding)Per Investigator: lack of response10024100
Initial Phase (Dose-finding)Termination of the trial by sponsor43349300
Initial Phase (Dose-finding)Unspecified reason10000000
Initial Phase (Dose-finding)Withdrawal by Subject20010200

Baseline characteristics

CharacteristicPV: Ruxolitinib 10 mg BIDTotalET: Ruxolitinib 50 mg QDET: Ruxolitinib 25 mg BIDET: Ruxolitinib 10 mg BIDPV: Ruxolitinib 50 mg QDPV: Ruxolitinib 25 mg BID
Age, Continuous
Essential thrombocythemia group
NA years52.9 years
STANDARD_DEVIATION 13.19
52.8 years
STANDARD_DEVIATION 13.48
54.1 years
STANDARD_DEVIATION 11.55
49.6 years
STANDARD_DEVIATION 17.89
NA yearsNA years
Age, Continuous
Polycythemia vera group
56.3 years
STANDARD_DEVIATION 10.98
55.4 years
STANDARD_DEVIATION 13.2
NA yearsNA yearsNA years51.0 years
STANDARD_DEVIATION 20.49
57.0 years
STANDARD_DEVIATION 11.26
Age, Customized
< 65
14 participants56 participants6 participants19 participants7 participants5 participants5 participants
Age, Customized
>= 65
5 participants17 participants3 participants3 participants1 participants2 participants3 participants
Hematocrit
Hematocrit < 45%
9 participants45 participants9 participants18 participants7 participants1 participants1 participants
Hematocrit
Hematocrit ≥ 45%
10 participants28 participants0 participants4 participants1 participants6 participants7 participants
Platelet count
< 400 x 10^9 per liter
6 participants12 participants0 participants0 participants1 participants1 participants4 participants
Platelet count
≥400 x 10^9 per liter
13 participants61 participants9 participants22 participants7 participants6 participants4 participants
Sex: Female, Male
Female
11 Participants42 Participants9 Participants13 Participants3 Participants4 Participants2 Participants
Sex: Female, Male
Male
8 Participants31 Participants0 Participants9 Participants5 Participants3 Participants6 Participants
White blood cell count
< 10 x 10^9 per liter
7 participants37 participants7 participants15 participants6 participants1 participants1 participants
White blood cell count
≥ 10 x 10^9 per liter
12 participants36 participants2 participants7 participants2 participants6 participants7 participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
19 / 198 / 87 / 78 / 822 / 228 / 934 / 3439 / 39
serious
Total, serious adverse events
2 / 192 / 81 / 71 / 81 / 223 / 917 / 3417 / 39

Outcome results

Primary

Percentage of Essential Thrombocythemia (ET) Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)

For a confirmed response all criteria must have been sustained for at least 2 months. Complete Clinical Response: * Platelet count \< 400 x 10\^9/L * White blood cell count \< 10 x 10\^9/L with normal differential and Hematocrit ≤ upper limit of normal * Absence of sustained (\> 2 weeks) anemia or leucopenia based on institutional normal ranges * Absence of systemic ET symptoms (pruritus, bone pain, weakness, night sweats, paresthesias) * Absence of palpable splenomegaly Partial Clinical Response: * Platelet count \< 400 x 10\^9/L * 50% reduction in palpable splenomegaly

Time frame: Assessed after 2 cycles (56 days) of treatment on Day 1 of Cycle 3.

Population: Essential thrombocythemia intent to treat population, including all patients who took at least 1 dose of study drug. One patient in the 50 mg QD group did not have a response assessment at Cycle 3, Day 1.

ArmMeasureValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia (ET) Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)13 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia (ET) Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)0 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia (ET) Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)0 percentage of participants
Primary

Percentage of Polycythemia Vera Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)

For a confirmed response all criteria must have been sustained for at least 2 months. CR: * Hematocrit \< 45% in men and \< 42% in women * No phlebotomy for 1 month * No palpable splenomegaly * White blood cells \< 10 x 10\^9/L with normal differential and platelets \< 400 x 10\^9/L * No sustained leucopenia or thrombocytopenia (\>2 weeks) * No systemic PV symptoms (pruritus, night sweats, bone pain, fever, weight loss) PR: * Hematocrit \< 45% in men and \< 42% in women * 50% reduction in phlebotomy requirements from 6 months before treatment started * 50% reduction in palpable splenomegaly

Time frame: Assessed after 2 cycles (56 days) of treatment on Day 1 of Cycle 3

Population: Polycythemia Vera intent to treat population, including all patients who took at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)58 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)50 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants With a Confirmed Clinical Partial Response (PR) or Complete Response (CR)57 percentage of participants
Secondary

Change From Baseline to Week 4 in Essential Thrombocythemia Symptoms

Patients were asked to rate their symptoms on a scale of 0 (none) to 10 (worse possible) for the prior week giving the worst level of symptoms experienced during the preceding 7 days. A negative change from baseline score indicates improvement in symptoms. For patients with essential thrombocythemia, queried symptoms included itching/pruritus, bone pain, night sweats, paresthesias (tingling or numbness), and weakness.

Time frame: Baseline and Week 4 (Cycle 2, Day 1)

Population: Essential Thrombocythemia intent to treat population who had symptom scores \> 0 at baseline and for whom data was available.

ArmMeasureGroupValue (MEAN)Dispersion
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsParesthesia-1.7 score on a scaleStandard Deviation 2.08
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsItching (pruritus)-2.7 score on a scaleStandard Deviation 2.89
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsNight Sweats-5.0 score on a scale
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsWeakness-1.0 score on a scaleStandard Deviation 1
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsBone pain-3.5 score on a scaleStandard Deviation 2.12
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsNight Sweats-1.3 score on a scaleStandard Deviation 2.49
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsWeakness-0.2 score on a scaleStandard Deviation 2.46
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsParesthesia-1.6 score on a scaleStandard Deviation 1.5
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsItching (pruritus)-1.2 score on a scaleStandard Deviation 2.74
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsBone pain-0.4 score on a scaleStandard Deviation 2.26
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsNight Sweats-4.0 score on a scaleStandard Deviation 4.36
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsBone pain-2.3 score on a scaleStandard Deviation 4.93
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsParesthesia-2.8 score on a scaleStandard Deviation 2.93
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Essential Thrombocythemia SymptomsWeakness-1.7 score on a scaleStandard Deviation 2.52
Secondary

Change From Baseline to Week 4 in Health-related Quality of Life

Health-related Quality of Life was assessed using the Global Health Status/Quality of Life Scale of the European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30). This scale ranges from 0 to 100, with higher scores indicating higher quality of life.

Time frame: Baseline and Week 4 (Cycle 2, Day 1)

Population: Intent to treat population. The intent-to-treat (ITT) population included all subjects who took at least 1 dose of study drug.

ArmMeasureValue (MEAN)Dispersion
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Health-related Quality of Life10.9 units on a scaleStandard Deviation 10.8
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Health-related Quality of Life6.3 units on a scaleStandard Deviation 14
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Health-related Quality of Life14.6 units on a scaleStandard Deviation 17.78
ET: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Health-related Quality of Life-2.1 units on a scaleStandard Deviation 10.5
ET: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Health-related Quality of Life3.0 units on a scaleStandard Deviation 27.6
ET: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Health-related Quality of Life11.2 units on a scaleStandard Deviation 23.4
Secondary

Change From Baseline to Week 4 in Polycythemia Vera Symptoms

Patients were asked to rate their symptoms on a scale of 0 (none) to 10 (worse possible) for the prior week giving the worst level of symptoms experienced during the preceding 7 days. A negative change from baseline score indicates improvement in symptoms. For patients with Polycythemia Vera, queried symptoms included fever, itching/pruritus, bone pain and night sweats.

Time frame: Baseline and Week 4 (Cycle 2, Day 1)

Population: Polycythemia Vera intent to treat population who had symptom scores \> 0 at baseline for whom data was available.

ArmMeasureGroupValue (MEAN)Dispersion
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsItching (pruritus)-4.2 scores on a scaleStandard Deviation 3.63
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsFever-2.0 scores on a scaleStandard Deviation 1.41
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsBone pain-2.0 scores on a scaleStandard Deviation 1.95
PV: Ruxolitinib 10 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsNight sweats-1.9 scores on a scaleStandard Deviation 2.52
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsItching (pruritus)-4.6 scores on a scaleStandard Deviation 1.85
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsBone pain-2.5 scores on a scaleStandard Deviation 0.71
PV: Ruxolitinib 25 mg BIDChange From Baseline to Week 4 in Polycythemia Vera SymptomsNight sweats-2.8 scores on a scaleStandard Deviation 3.19
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Polycythemia Vera SymptomsFever-2.0 scores on a scaleStandard Deviation 1.41
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Polycythemia Vera SymptomsItching (pruritus)-2.8 scores on a scaleStandard Deviation 4.09
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Polycythemia Vera SymptomsNight sweats-3.3 scores on a scaleStandard Deviation 1.15
PV: Ruxolitinib 50 mg QDChange From Baseline to Week 4 in Polycythemia Vera SymptomsBone pain-4.3 scores on a scaleStandard Deviation 2.08
Secondary

Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 Weeks

The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly

Time frame: Baseline and 24 weeks (Cycle 7, Day 1)

Population: Essential thrombocythemia intent to treat population. 'N' indicates the number of patients for whom data was available for each component.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L14 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly95 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L5 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L0 percentage of participants
Secondary

Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 Weeks

The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly

Time frame: Baseline and 36 weeks (Cycle 10, Day 1)

Population: Essential thrombocythemia intent to treat population. 'N' indicates the number of patients for whom data was available for each component.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L14 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly100 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L11 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly94 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L79 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L14 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size100 percentage of participants
Secondary

Percentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 Weeks

The individual components of clinical response included: * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L * 50% reduction in spleen size * Absence of palpable splenomegaly

Time frame: Baseline and 4 weeks (Cycle 2, Day 1)

Population: Essential thrombocythemia intent to treat population. 'N' indicates the number of patients for whom data was available for each component.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 Weeks50% reduction in spleen size83 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksPlatelet count ≤ 400 x 10^9/L25 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksAbsence of palpable splenomegaly67 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksPlatelet count ≤ 400 x 10^9/L41 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 Weeks50% reduction in spleen size95 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksAbsence of palpable splenomegaly89 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksWBC count ≤ 10 x 10^9/L100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksPlatelet count ≤ 400 x 10^9/L33 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Essential Thrombocythemia Participants Who Achieved Individual Components of Clinical Response at 4 WeeksAbsence of palpable splenomegaly100 percentage of participants
Secondary

Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 Weeks

The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L

Time frame: Baseline and Week 12 (Cycle 4, Day 1)

Population: Polycythemia Vera intent to treat population for whom data was available.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 Weeks50% reduction in spleen size74 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksHematocrit <45% Without Phlebotomy95 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksAbsence of palpable splenomegaly68 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksPlatelet count ≤ 400 x 10^9/L58 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksWBC count ≤ 10 x 10^9/L68 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksHematocrit <45% Without Phlebotomy88 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksAbsence of palpable splenomegaly50 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 Weeks50% reduction in spleen size63 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksWBC count ≤ 10 x 10^9/L63 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksPlatelet count ≤ 400 x 10^9/L50 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 Weeks50% reduction in spleen size86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksHematocrit <45% Without Phlebotomy86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksWBC count ≤ 10 x 10^9/L43 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksPlatelet count ≤ 400 x 10^9/L57 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 12 WeeksAbsence of palpable splenomegaly57 percentage of participants
Secondary

Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 Weeks

The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L

Time frame: Baseline and Week 24 (Cycle 7, Day 1)

Population: Polycythemia Vera intent to treat population for whom data was available. 'N' indicates the number of patients for whom data was available for each component.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size78 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L58 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly61 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L74 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksHematocrit <45% Without Phlebotomy100 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly43 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size71 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksHematocrit <45% Without Phlebotomy88 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L88 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L25 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksWBC count ≤ 10 x 10^9/L86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksPlatelet count ≤ 400 x 10^9/L86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksAbsence of palpable splenomegaly71 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 24 WeeksHematocrit <45% Without Phlebotomy100 percentage of participants
Secondary

Percentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 Weeks

The individual components of clinical response included: * Hematocrit (Hct) \< 45% without phlebotomy * Absence of palpable splenomegaly * 50% reduction in spleen size * Platelet count ≤ 400 x 10\^9/L * White blood cell (WBC) count ≤ 10 x 10\^9/L

Time frame: Baseline and Week 36 (Cycle 10, Day 1)

Population: Polycythemia Vera intent to treat population for whom data was available. 'N' indicates the number of patients for whom data was available for each component.

ArmMeasureGroupValue (NUMBER)
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L67 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size76 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksHematocrit <45% Without Phlebotomy100 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly71 percentage of participants
PV: Ruxolitinib 10 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L67 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size71 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksHematocrit <45% Without Phlebotomy88 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly57 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L75 percentage of participants
PV: Ruxolitinib 25 mg BIDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L25 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksWBC count ≤ 10 x 10^9/L71 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksPlatelet count ≤ 400 x 10^9/L86 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksHematocrit <45% Without Phlebotomy100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 Weeks50% reduction in spleen size100 percentage of participants
PV: Ruxolitinib 50 mg QDPercentage of Polycythemia Vera Participants Who Achieved Individual Components of Clinical Response at 36 WeeksAbsence of palpable splenomegaly86 percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 7, 2026