A Phase 1 interventional study of Carboplatin and Laboratory Biomarker Analysis in Adult Acute Megakaryoblastic Leukemia, Adult Acute Monoblastic Leukemia and Adult Acute Monocytic Leukemia, sponsored by National Cancer Institute (NCI). Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-04-02.
Sponsored by National Cancer Institute (NCI) · Phase 1, Interventional, and Treatment
Among 42 studies in Leukemia, Megakaryoblastic, Acute by National Cancer Institute (NCI) — none open to participants now, 2 under way, none of them phase 3. Leukemia, Megakaryoblastic, Acute · National Cancer Institute (NCI).
Among the 42 studies in Leukemia, Megakaryoblastic, Acute by National Cancer Institute (NCI), this one is the 41st largest by enrollment of the 41 interventional ones that give a count, is one of 6 that started in 2008, is one of 17 in phase 1, and was the 29th registered.
172 studies on the registry are indexed under Leukemia, Megakaryoblastic, Acute; none are open to participants now.
Browse Leukemia, Megakaryoblastic, Acute studies →None of the 42 studies in Leukemia, Megakaryoblastic, Acute by National Cancer Institute (NCI) is open now. The open studies under Leukemia, Megakaryoblastic, Acute, anywhere →
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42 studies; the count open now beside each. This study's row is marked.
A study in two phases is counted once above. Listed by phase, each with its combined phases: Phase 1 22 · Phase 2 21 · Phase 3 3
First in 1997; this study’s year is marked. 6 started in 2008.
By drug class, each counting the studies that test any of its medicines:
This study's enrollment of 12 is below the median of 45 across 137 interventional studies indexed under Leukemia, Megakaryoblastic, Acute.
Median enrollment 52 across the 41 interventional studies, 400 across the 1 observational. Of the 39 that completed or were terminated, 15 (38%) have results posted.
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National Cancer Institute (NCI) is the lead sponsor of 3,556 studies on the registry; 336 are open to participants now.
Of its 412 completed or terminated interventional studies of FDA-regulated products, 374 (91%) have results posted.
1 of the studies in Leukemia, Megakaryoblastic, Acute by National Cancer Institute (NCI) that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT00392353National Cancer Institute (NCI)Vorinostat and Azacitidine in Treating Patients With Myelodysplastic Syndromes or Acute Myeloid Leukemia | 2026-12-31 |
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Among the 42 studies in Leukemia, Megakaryoblastic, Acute by National Cancer Institute (NCI), from their registry updates:
Nothing recorded among them since 2026-09-25.
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This phase I trial is studying the side effects and best dose of veliparib when given together with topotecan hydrochloride with or without carboplatin in treating patients with relapsed or refractory acute leukemia, high-risk myelodysplasia, or aggressive myeloproliferative disorders. Veliparib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as topotecan hydrochloride and carboplatin, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving veliparib together with topotecan hydrochloride and carboplatin may kill more cancer cells.
PRIMARY OBJECTIVES:
I. To determine the feasibility, tolerability, and toxicities of ABT-888 (veliparib) when administered alone and in combination with topotecan hydrochloride with or without carboplatin in patients with relapsed or refractory acute leukemia, high-risk myelodysplasia, or aggressive myeloproliferative disorders.
II. To determine the maximum tolerated dose of ABT-888 when administered with topotecan hydrochloride and carboplatin in these patients.
III. To determine if ABT-888 when administered with topotecan hydrochloride and carboplatin can induce clinical responses in these patients.
SECONDARY OBJECTIVES:
I. To determine the pharmacokinetics of ABT-888 when administered alone and in combination with topotecan hydrochloride with or without carboplatin in these patients.
II. To obtain pharmacodynamic data regarding the ability of ABT-888 to inhibit poly (ADP-ribose) levels in leukemic blasts.
III. To obtain descriptive data regarding the mutational status and/or methylation status of key genes in selected DNA repair pathways (Fanconi complementation groups A-F, Blooms, and ataxia-telangiectasia) in leukemic blasts.
OUTLINE: This is a multicenter, dose-escalation study of veliparib.
Patients receive veliparib orally twice daily on days 1-8, 1-14, or 1-21 and topotecan hydrochloride with or without carboplatin IV continuously over 120 hours on days 3-7. Treatment repeats every 28-63 days for up to 6 courses in the absence of disease progression or unacceptable toxicity.
Patients undergo blood sample collection periodically for pharmacokinetic studies.
After completion of study therapy, patients are followed for 30 days.
Inclusion Criteria:
Aggressive phase high-risk myeloproliferative disorders (i.e., polycythemia vera, essential thrombocythemia, or Ph-negative chronic myelogenous leukemia) meeting ≥ 1 of the following criteria:
Chronic myelomonocytic leukemia meeting either of the following criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Allogeneic and autologous transplant
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GVHD (graft-versus-host disease)
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients receive veliparib orally twice daily on days 1-8, 1-14, or 1-21 and topotecan hydrochloride with or without carboplatin IV continuously over 120 hours on days 3-7. Treatment repeats every 28-63 days for up to 6 courses in the absence of disease progression or unacceptable toxicity.
Drug: Carboplatin · Other: Laboratory Biomarker Analysis · Drug: Topotecan Hydrochloride · Drug: Veliparib
Given IV
Also known as: Blastocarb, Carboplat, Carboplatin Hexal, Carboplatino, Carboplatinum, Carbosin, Carbosol, Carbotec, CBDCA, Displata, Ercar, JM-8, JM8, Nealorin, Novoplatinum, Paraplatin, Paraplatin AQ, Paraplatine, Platinwas, Ribocarbo
Correlative study
Given IV
Also known as: Evotopin, Hycamptamine, Hycamtin, Nogitecan Hydrochloride, Potactasol, SKF S 104864 A, SKF S-104864-A, SKF S104864A, Topotec, Topotecan HCl, topotecan hydrochloride (oral)
Given orally
Also known as: ABT 888, ABT-888, ABT888, PARP-1 inhibitor ABT-888
Maximum tolerated dose of veliparib, determined as the highest dose level where 0/3 or 1/6 experience DLT, measured according to NCI-CTCAE 4.0
Time frame: Up to 63 days
Clinical response (CR, CRi, PR)
Time frame: Up to 3 years
Pharmacokinetics and pharmacodynamics of veliparib
Relevant individual PK parameters will be estimated using non-compartmental PK methods. PK parameters will be compared when administered alone or in combination by a paired student's t-test. Comparison of PK parameters among dose levels will be performed using non-parametric statistical methods for K-independent samples. Associations between exposure parameters (Cmax and AUC) and pharmacodynamic endpoints (cellular PAR levels, mutation and/or altered expression of selected DNA repair genes) will be assessed using the appropriate non-parametric statistical tests.
Time frame: Day 1 at pre-treatment, .25, .5, 1, 2, 4, 6, and 8 hours after veliparib and day 4 at pre-veliparib, .25, .5, 1, 2, 4, 6, and 8 hours after the first dose of veliparib
Ran from Feb 2008 to primary completion in Nov 2016, 104 months.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Veliparib
Leukemia, Megakaryoblastic, Acute →
National Cancer Institute (NCI) →