Safety and Activity of Digoxin With Decitabine in Adult AML and MDS

Phase 1

Terminated

• Conditions: Acute Myeloid Leukemia; Myelodysplastic Syndromes
• Interventions: Drug: Decitabine; Drug: Digoxin

• Registration Number: NCT03113071
• Lead Sponsor: Fox Chase Cancer Center

Brief Summary

The primary hypothesis is that digoxin can be safely added to decitabine and will increase the response rates in medically unfit patients with newly diagnosed AML/MDS or those with relapsed/refractory AML/MDS. Furthermore, it is hypothesized that the addition of digoxin to decitabine will result in distinct epigenetic alterations in AML/MDS patients.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-04-10
• Study First Submitted QC: 2017-04-12
• Study First Posted: 2017-04-13
• Study Start: 2017-06-02
• Primary Completion: 2019-01-08
• Study Completion: 2019-03-11
• Status Verified: 2021-02
• Results First Submitted: 2021-02-22
• Results First Submitted QC: 2021-02-22
• Last Update Submitted: 2021-02-22
• Results First Posted: 2021-03-16
• Last Update Posted: 2021-03-16

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 1

Inclusion Criteria

1. Patients must have a confirmed diagnosis of one of the following:

   • Newly diagnosed AML (excluding APL)
   • Newly diagnosed intermediate-2 (INT-2) or high-risk MDS
   • Relapsed or Refractory AML, or INT-2 or high-risk MDS

2. For patients with refractory disease they must be at least 4 weeks out from most recent therapeutic intervention.

3. Age > 18 years.

4. ECOG performance status 0 - 2.

5. Patients must have normal organ function as defined below:

   • Total bilirubin within normal institutional limits
   • AST/ALT (SGOT/SGPT) < 2 times institutional normal limits
   • Creatinine within normal institutional limits OR
   • Creatinine clearance > 60 mL/min/1.73 m2 for patients with creatinine levels above institutional normal

6. Ability to understand and willingness to sign a written informed consent and HIPAA consent document.

7. Agreement on the part of any male participant to use effective contraception during sexual activity throughout the duration of treatment and for 2 months after discontinuation, for protection against the risk of embryofetal toxicity.

Read More

Exclusion Criteria

1. Patients who have had chemotherapy or radiotherapy within 4 weeks prior to entering the study or those who have not recovered from adverse events (less than or equal to Grade 1 toxicity) due to agents administered more than 4 weeks earlier.

2. Patients receiving any other investigational agents.

3. Patients with known brain metastases, active infection, or untreated CNS leukemia.

4. Patients with prior or current history of digoxin exposure.

5. Patients requiring treatment with one or more medications known to interact adversely with digoxin, namely thiazide and/or loop diuretics, quinidine, ritonavir, amiodarone, cyclosporine, itraconazole, propafenone, spironolactone, verapamil.

6. Patients requiring treatment with one or more beta-blockers (metoprolol, atenolol, propranolol) or calcium channel blockers with AV-nodal blocking activity (verapamil, diltiazem).

7. Patient with history of prior exposure to decitabine.

8. Patients eligible for intensive induction chemotherapy and "Medically unfit" based on a TRM score ≥ 13.1*

   • TRM Score= A scoring model which predicts early death following intensive induction chemotherapy in newly diagnosed AML.

     • Model looks at ECOG PS, Age, Platelet Count, Albumin, 2nd AML, WBC, % Peripheral Blasts, Creatinine
     • Score above 13.1 associated with 31%+ chance of death after induction

9. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.

10. Known HIV-positive patients on combination anti-retroviral therapy are ineligible because of the potential for pharmacokinetic interactions with digoxin. In addition, these patients are at increased risk of lethal infections when treated with marrow-suppressive therapy.

11. Pregnant or breast feeding

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Refractory or relapsed AML/MDS	Digoxin	or Group#2 the target will be to enroll a total of 60 patients with relapsed or refractory AML/MDS, including the eligible patients enrolled in the phase Ib group. This group will have randomization and treatments similar to Group#1.
Newly diagnosed AML/MDS	Decitabine	For Group#1 a total of 37 patients with newly diagnosed MDL or MDS will be enrolled, including the eligible patients originally enrolled in the phase Ib portion (safe dose group) of the study, with the goal of determining the clinical activity of our experimental regimen. In the phase II segment, all new patients who are enrolled will initially be randomized in a 1 to 1 fashion to receive decitabine alone or decitabine plus digoxin for one cycle before receiving decitabine plus digoxin for all subsequent cycles for a total of 6 cycles.
Refractory or relapsed AML/MDS	Decitabine	or Group#2 the target will be to enroll a total of 60 patients with relapsed or refractory AML/MDS, including the eligible patients enrolled in the phase Ib group. This group will have randomization and treatments similar to Group#1.
Newly diagnosed AML/MDS	Digoxin	For Group#1 a total of 37 patients with newly diagnosed MDL or MDS will be enrolled, including the eligible patients originally enrolled in the phase Ib portion (safe dose group) of the study, with the goal of determining the clinical activity of our experimental regimen. In the phase II segment, all new patients who are enrolled will initially be randomized in a 1 to 1 fashion to receive decitabine alone or decitabine plus digoxin for one cycle before receiving decitabine plus digoxin for all subsequent cycles for a total of 6 cycles.

Primary Outcome Measures

Name	Time	Method
Maximum Tolerated Dose of Digoxin in Combination With Standard Dose of Decitabine in Patients Newly Diagnosed AML/MDS or Those With Relapsed or Refractory AML/MDS Considered Unfit for Induction Therapy	1-2 months	Maximum tolerated dose of digoxin in combination with standard dose of decitabine will be determined by a standard 3+3 dose de-escalation design
Number of Grade II and IV Toxicities Due to of the Combination Therapy of Decitabine in Combination With Digoxin	1-3 years	The safety of the combination therapy will be determined by the number of grade III or IV non-hematologic toxicities as per NCI CTCAE v4.03 criteria.
Number of MDS Patients With Complete Remission (CR)	1-3 years	Complete response will be assessed by International Working Group (IWG) criteria for MDS
Number of AML Patients With Complete Remission With Incomplete Blood Count Recovery (CRi)	1-3 years	CRi will be assessed by IWG criteria for AML

Trial Locations

Locations (2)

Fox Chase Cancer Center; 🇺🇸 Philadelphia, Pennsylvania, United States

Jeans Hospital; 🇺🇸 Philadelphia, Pennsylvania, United States