Clinical Study of PM01183 in Patients With Acute Leukemia or Relapsed/Refractory Myelodysplastic Syndrome

Open-Label, Dose-Escalating, Clinical and Pharmacokinetic Phase I Study of PM01183 in
Patients with Advanced Acute Leukemia to determine the maximum tolerated dose (MTD) and the
recommended dose (RD) of PM01183 administered as 1-hour intravenous (i.v.) infusion on three
consecutive days (Days 1-3) to patients with advanced acute leukemia and to assess the
safety profile and tolerability, to obtain preliminary information on the efficacy and to
characterize the pharmacokinetics (PK) and pharmacogenomic (PGx) profile of PM01183.

Inclusion Criteria:

- Voluntarily signed and dated written informed consent

- Age ≥ 18 years.

- Patients must have a previous cytological or histological diagnosis of:

- Relapsed or primary refractory non-M3 acute myeloid leukemia (AML) by the World
Health Organization (WHO) criteria (irrespective of the number of prior
regimens), either de novo or secondary [i.e., secondary to myelodysplastic
syndromes (MDS), myeloproliferative neoplasms or previous chemotherapy for
another condition].

- Untreated AML in patients ≥ 65 years of age, if patients are not candidates for
standard induction chemotherapy or have poor risk AML (i.e., secondary AML or
AML with adverse cytogenetics or complex karyotype).

- Accelerated or blastic phase chronic myeloid leukemia (CML, with progressive
disease despite treatment with BCR-ABL kinase inhibitors), or chronic
myelomonocytic leukemia (CMML).

- Relapsed or refractory acute lymphoblastic leukemia (ALL) by WHO criteria.

- Patients must have the following laboratory values prior to the start of treatment:

- Total bilirubin ≤ 1.5 x upper limit of normal (ULN) range of values, unless due
to elevated indirect bilirubin (e.g.,Gilbert's syndrome or hemolysis).

- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3 x ULN.

- Alkaline phosphatase (AP) ≤ 2.5 x ULN.

- Albumin ≥ 2.5 g/dl.

- Calculated creatinine clearance (CrCl) ≥ 30 ml/min (using Cockcroft and Gault's
formula).

- Creatine phosphokinase (CPK) ≤ 2.5 x ULN.

- Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 2.

- Negative pregnancy test for women of childbearing potential.

Exclusion Criteria:

- Pregnant or lactating women; men and women of reproductive potential who are not
using effective contraceptive methods throughout the treatment period and for six
months after discontinuation of treatment.

- Patients who plan to undergo allogeneic BM transplantation within four weeks.

- Other relevant diseases or adverse clinical conditions:

- History or presence of unstable angina, myocardial infarction, congestive heart
failure, or clinically significant valvular heart disease within last year.

- Symptomatic or unstable cardiac arrhythmias, and/or prolonged QT-QTc grade ≥ 2.

- History of significant neurological or psychiatric disorders that may affect the
patient's compliance with the protocol assessments.

- Active uncontrolled infection.

- Myopathy or any clinical situation that causes significant and persistent
elevation of CPK (> 2.5 x ULN in two different determinations performed one week
apart).

- Significant non-neoplastic liver disease (e.g., cirrhosis, active chronic
hepatitis).

- Any other major illness that, in the Investigator's judgment, will substantially
increase the risk associated with the patient's participation in this study.

- Hematopoietic allogeneic stem cell transplantation within the last four months and/or
active graft versus host disease, or prior autologous transplantation within the last
four weeks.

- Patients known to be human immunodeficiency virus (HIV) positive.

- Cytotoxic chemotherapy within the last two weeks; radiation therapy within the last
two weeks; biologic agents, including hematopoietic growth factors, within the last
week; hydroxyurea, imatinib, corticosteroids and arsenic trioxide should be
discontinued at least 24 hours prior to first study drug administration.

- Treatment with any investigational product in the ≤ 5 half-lives period prior to
inclusion in the study, or 30 days after therapy (in case of unknown half-life),
unless evidence of rapid proliferating disease and upon discussion with the Sponsor.

- Known hypersensitivity to any of the components of the drug product (DP).