Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-blind, Randomised Controlled Trial Evaluating the Safety and Efficacy of Antifibrinolytics (Tranexamic Acid) in Patients With Haematological Malignancies With Severe Thrombocytopenia
Brief Summary: The purpose of this study is to test whether giving tranexamic acid to patients receiving treatment for blood cancers reduces the risk of bleeding or death, and the need for platelet transfusions. Patients will be randomised to receive tranexamic acid (given intravenously through a drip, or orally) or a placebo.


Options:
A: Inclusion Criteria:

* Age 16 years or more
* Confirmed diagnosis of MYH9-related disease
* Average platelet count for the previous year less than 50x10e9/L
* Written informed consent

Exclusion Criteria:

* Diseases known to involve the risk of thromboembolic events (e.g. atrial fibrillation)
* History of thrombosis within 1 year
* Use of drugs that affect platelet function (including but not limited to, aspirin, clopidogrel or NSAIDS) or anti-coagulants
* Females who are pregnant or nursing (a negative pregnancy test in required before enrollment of fertile women)
* Formal refusal of any recommendation of a safe contraception
* Alcohol or drug addiction
* Altered renal function as defined by creatinine of 20 mg/L or more
* Any other disease or condition that by the advise of the responsible physician would make the treatment dangerous for the patient or would make the patient ineligible for the study, including physical, psychiatric, social and behavioral problems. HCV positivity and liver diseases will not be considered an exclusion criterion since a phase II study showed that eltrombopag was effective and safe in this patient population.
B: Inclusion Criteria:

* Adult subjects (18 years of age or older) with advanced MDS, sAML/MDS, or de novo AML with \>=10% and \<=50% blasts in bone marrow. Peripheral blood blast change over time should not be suggestive of highly proliferative disease (as judged by the investigator).
* Subjects must be dependent on regular platelet transfusions or have a platelet count taken within the 4 weeks prior to randomization that is \<30 Gi/L.
* Subjects must be relapsed, refractory or ineligible to receive standard treatment options of azacitidine and decitabine and must be relapsed, refractory or ineligible to receive intensive chemotherapy or autologous/allogeneic stem cell transplantation. A subject may be considered relapsed/refractory to a standard treatment if it is discontinued due to lack of efficacy. For subjects ineligible for standard treatments, it is permissible to start one of these standard treatments while on study medication if the Investigator considers that the subject becomes eligible during the course of the study.
* Prior therapy with demethylating agents (azacitidine or decitabine), lenalidomide or IL-11(oprelvekin) must have been completed at least 4 weeks before Day 1; antithymocyte/antilymphocyte globulin, intensive chemotherapy, or autologous/allogeneic stem cell transplantation must have been completed at least 2 months before Day 1. If a subject must discontinue a course of therapy due to lack of efficacy, the washout periods listed above do not apply (and the patient may be screened and randomized immediately if other eligibility criteria are met).
* Subjects must have platelet count and platelet transfusion data available over a period of 4 weeks prior to randomization.
* Subjects with advanced MDS, sAML/MDS, or de novo AML must have stable disease indicated by a doubling time of peripheral blast counts \>7 days during screening.
* During the 4 weeks prior to randomization, subjects must have a baseline bone marrow examination including the following:
* cytomorphology to confirm bone marrow blasts between 10-50%,
* cytogenetics (provide only most prevalent abnormal clone),

The results of the above tests are required prior to subject randomization.

* Supportive/palliative therapies such as cytokines (except for IL-11; oprelvekin), valproic acid, all-trans retinoic acid or mild chemotherapy are allowed if part of the local SOC, provided those therapies have been at a stable dose for 4 weeks. If the subject chooses to discontinue these therapies prior to study entry, they must be completed 4 weeks prior to enrollment into this study, unless the therapy is discontinued due to lack of efficacy. Erythropoiesis-stimulating agents (ESAs) in anemic subjects or granulocyte colony-stimulating factor (G-CSF) in subjects with severe neutropenia and recurrent infections are allowed during the study as per accepted standards. Subjects who enter the study on ESAs or G-CSF should continue at the same dose schedule until the optimal dose of study medication has been established.
* ECOG Status 0-3.
* Subject is able to understand and comply with protocol requirements and instructions.
* Subject has signed and dated informed consent.
* Prothrombin time (PT/INR) and activated partial thromboplastin time (aPTT) must be within 80 to 120% of the normal range at baseline.
* Adequate baseline organ function defined by the criteria below:
* total bilirubin (except for Gilbert's Syndrome) \<= 1.5xULN
* ALT and AST \<= 3xULN
* creatinine \<= 2xULN
* albumin must not be below the lower limit of normal (LLN) by more than 20%.
* Subject is practicing an acceptable method of contraception (documented in chart). Female subjects (or female partners of male subjects) must either be of non-childbearing potential (hysterectomy, bilateral oophorectomy, bilateral tubal ligation or post-menopausal \>1 year), or of childbearing potential and use 1 of the following highly effective methods of contraception (i.e., Pearl Index \<1.0%) from 2 weeks prior to administration of study medication, throughout the study, and 28 days after completion or premature discontinuation from the study:
* Complete abstinence from intercourse;
* Intrauterine device (IUD);
* Two forms of barrier contraception (diaphragm plus spermicide, and for males condom plus spermicide);
* Male partner is sterile prior to entry into the study and is the only partner of the female;
* Systemic contraceptives (combined or progesterone only).

Exclusion Criteria:

* Subjects with a diagnosis of acute promyelocytic leukemia.
* History of treatment for cancer (other than MDS, sAML/MDS, or de novo AML) with systemic chemotherapy and/or radiotherapy within the last 2 years.
* History of treatment with romiplostim or other TPO-R agonists.
* Pre-existing cardiovascular disease (including congestive heart failure, New York Heart Association \[NYHA\] Grade III/IV), or arrhythmia known to increase the risk of thromboembolic events (e.g. atrial fibrillation), or subjects with a QTc \>450 msec (QTc \>480 msec for subjects with Bundle Branch Block).
* Bone marrow fibrosis that leads to an inability to aspirate marrow for assessment.
* Spleen size \>14 cm (length as per ultrasound examination).
* Leukocytosis \>=25,000/uL prior to Day 1 of study medication.
* Female subjects who are nursing or pregnant (positive serum or urine Beta-human chorionic gonadotropin \[B-hCG\] pregnancy test) at screening or pre-dose on Day 1.
* Current alcohol or drug abuse.
* Treatment with an investigational drug within 30 days or 5 half-lives (whichever is longer) preceding the first dose of study medication.
* Active and uncontrolled infections.
* Subjects infected with Hepatitis B, C or Human Immunodeficiency Virus (HIV).
* Subjects with liver cirrhosis.
C: Inclusion Criteria:

In order to be eligible for study entry, subjects must comply with the following:

* Males from 3 months old to 80 years old
* Signed written informed consent obtained prior to study entry
* Clinical diagnosis of WAS or XLT
* Platelet levels less than 100 x 109/L
* Adequate renal and hepatic function (creatinine and bilirubin less than or equal to 1.5 x IULN, AST and ALT less than or equal to 2.5 x IULN)

Exclusion Criteria:

Any patient is ineligible for study entry if he/she:

* Over the age of 80
* Women (only males are eligible)
* fertile men who are not practicing or who are unwilling to practice birth control while enrolled in the study or until at least 6 months after treatment
* Aspirin, aspirin-containing compounds, salicylates, non-steroidal anti-inflammatory medications (NSAIDS), clopidogrel or ticlopidine, warfarin or other vitamin K antagonists, unfractionated or low molecular heparin within 7 days of first infusion
* Red blood cell transfusion in the past four weeks
* Elevated (\> 1.5 x ULN) prothrombin time (PT) or partial thromboplastin time (PTT)
* New York Heart Classification III or IV heart disease. Other severe cardiovascular or cardiopulmonary disease, including COPD.
* Known HIV infection, hepatitis B or C infection
* Any infection requiring antibiotic treatment within 3 days
* Other concurrent medical or psychiatric conditions that, in the Investigator's opinion, may be likely to confound study interpretation or prevent completion of study procedures and follow-up examinations.
* Prior malignancy with less than a 5-year disease-free interval, excluding nonmelanoma skin cancers and carcinoma in situ of the cervix
D: Inclusion Criteria:

Patients are eligible for this trial if:

1. Aged ≥18 years of age
2. Confirmed diagnosis of a haematological malignancy
3. Undergoing chemotherapy, or chemotherapy is planned, or haematopoietic stem cell transplantation
4. Anticipated to have a hypoproliferative thrombocytopenia resulting in a platelet count of ≤10x10⁹/L for ≥ 5 days
5. Able to comply with treatment and monitoring

Exclusion Criteria:

A patient will not be eligible for this trial if he/she fulfils one or more of the following criteria:

1. Patients with a past history or current diagnosis of arterial or venous thromboembolic disease including myocardial infarction, peripheral vascular disease and retinal arterial or venous thrombosis.
2. Diagnosis of acute promyelocytic leukaemia (APML) and undergoing induction chemotherapy
3. Patients with a diagnosis/previous history of veno-occlusive disease (also called sinusoidal obstruction syndrome)
4. Patients with known inherited or acquired prothrombotic disorders e.g.

   1. Lupus anticoagulant
   2. Positive antiphospholipids
5. Patients receiving any pro-coagulant agents (e.g. DDAVP, recombinant Factor VIIa or Prothrombin Complex Concentrates (PCC) within 48 hours of enrolment, or with known hypercoagulable state
6. Patients receiving L-asparaginase as part of their current cycle of treatment
7. History of immune thrombocytopenia (ITP), thrombotic thrombocytopenic purpura (TTP) or haemolytic uraemic syndrome (HUS)
8. Patients with overt disseminated intravascular coagulation (DIC) (See Appendix 3 in the protocol for definition)
9. Patients requiring a platelet transfusion threshold \>10x10/⁹L at time of randomisation. (This refers to patients who require their platelet count to be maintained at a certain specified level on an ongoing basis, and excludes a transient rise in the threshold due to sepsis.)
10. Patients with a known inherited or acquired bleeding disorder e.g.

    1. Acquired storage pool deficiency
    2. Paraproteinaemia with platelet inhibition
11. Patients receiving anticoagulant therapy or anti-platelet therapy
12. Patients with visible haematuria at time of randomisation
13. Patients with anuria (defined as urine output \< 10 mls/hr over 24 hours).
14. Patients with severe renal impairment (eGFR ≤30 ml/min/1.73m²)
15. Patients with a previous history of epilepsy, convulsions, fits or seizures
16. Patients who are pregnant or breast-feeding
17. Allergic to tranexamic acid.
18. Patients enrolled in other trials involving platelet transfusions, anti-fibrinolytics, platelet growth factors or other pro-coagulant agents.
19. Patients previously randomised into this trial at any stage of their treatment.

Answer: D