Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Prospective Randomized Multicenter Study of Dalteparin Prophylaxis in High-Risk Ambulatory Cancer Patients
Brief Summary: Some cancer patients starting a new chemotherapy regimen are likely to develop blood clots, also known as venous thromboembolism (VTE). Blood clots can cause symptoms and can occasionally be life-threatening. The purpose of this study is to determine if a daily injection of a blood-thinner, dalteparin, for 12 weeks can safely and effectively reduce the frequency of blood clots. Dalteparin is currently approved for prevention of blood clots following surgery and in hospitalized patients but not specifically for cancer outpatients.


Options:
A: Inclusion Criteria:

1. Hospitalized medical patients 70 years of age or older
2. Acute medical illness with significant decrease in mobility expected for at least 4 days (patient bedridden or only able to walk short distances)
3. written informed consent

Exclusion Criteria:

1. immobilization longer than 3 days prior to randomization
2. prior major surgery, trauma or invasive procedure within the last 4 weeks including any injuries or operation of central nervous system
3. expected major surgical or invasive procedure within the next 3 weeks after randomization
4. LMWH/heparin administration longer than 48 hours in the 5 days prior to randomization
5. immobilization due to cast or fracture
6. indication for anticoagulatory or thrombolytic therapy
7. acute symptomatic DVT / PE
8. known hypersensitivity to any of the study drugs or drugs with similar chemical structures
9. Acute or history of heparin induced thrombocytopenia type II (HIT II)

Other protocol-defined inclusion/exclusion criteria may apply
B: Inclusion Criteria:

* A histologic diagnosis of malignancy;
* At planned initiation of a new systemic chemotherapy regimen (including patients starting on first chemotherapy or patients previously treated but starting on a new regimen);
* A risk score for VTE ≥3 \[assign score of 2 for very high risk sites of cancer (stomach, pancreas), score of 1 for high risk site (lung, lymphoma, gynecologic, bladder, testicular) and score of 0 for all other sites\], hemoglobin \<10 g/dL or planned use of erythropoiesis stimulating agents, platelet count ≥350,000/mm3, total leukocyte count \> 11,000/mm3 or body mass index ≥ 35 kg/m2\]. Any counts meeting criteria drawn within 2 weeks prior to enrollment are considered acceptable.
* Age 18 years or older
* Provide written, informed consent.

Exclusion Criteria:

* Active bleeding or at high risk of serious bleeding complication in the opinion of the investigator
* Diagnosis of primary brain tumor multiple myeloma, leukemia, or myelodysplastic syndrome
* Planned stem cell transplant
* Life expectancy \< 6 months
* Known allergy to heparin or LMWH
* Patient or caregiver incapable of daily self-injection
* Acute or chronic renal insufficiency with creatinine clearance \< 30 mL/min
* History of heparin-induced thrombocytopenia
* Allergy to contrast agents
* Pregnancy
* Need for anticoagulant therapy
* Platelet count \< 75,000/mm3
C: DISEASE CHARACTERISTICS:

* Histologically or cytologically confirmed metastatic or locally advanced adenocarcinoma of the pancreas

  * Patients with clinical 'high probability' of pancreatic cancer and biopsy suggestive but not diagnostic of pancreatic cancer may be eligible based on review by the principal investigator
* Measurable or evaluable disease
* No clinical evidence of active venous thromboembolism

PATIENT CHARACTERISTICS:

* Karnofsky performance status (PS) 60-100% OR WHO PS 0-2
* Life expectancy \> 12 weeks
* Absolute neutrophil count \> 2,000/mm³
* WBC \> 3,000/mm³
* Platelet count \> 100,000/mm³
* Creatinine clearance \> 50 mL/min
* INR ≤ 1.5 times upper limit of normal (ULN)
* Bilirubin \< 1.5 times ULN (stent allowed)
* Not pregnant or nursing
* Negative pregnancy test
* Fertile patients must use effective contraception
* No cerebrovascular accident within the past 6 months
* No obvious contraindication to anticoagulation, including the following:

  * Bleeding diathesis
  * Active peptic ulcer
  * Ulcerating cancer into duodenum
* No history of other advanced malignancy
* No gross hematuria
* No melaena or gross evidence of gastrointestinal bleeding (other than piles)
* No requirement for a central line
* No other significant medial or psychiatric illness that, in the opinion of the investigator, would preclude study participation

PRIOR CONCURRENT THERAPY:

* No prior gemcitabine hydrochloride-containing treatment
* No other concurrent cytotoxic chemotherapy, immunotherapy, hormonal therapy (excluding contraceptives and replacement steroids), or experimental medications
* No other concurrent specific anticancer therapy as a result of disease progression
* No concurrent caval filter device
* No other concurrent anticoagulants for venous thromboembolism or other reasons (e.g., atrial fibrillation)
* No concurrent acetylsalicylic acid (\> 75 mg) as an antiplatelet drug for a preexisting cardiovascular condition
* No concurrent clopidogrel bisulfate
D: Inclusion Criteria:

Cancer patient with metastatic or locally advanced solid tumor of lung, pancreas, stomach, colon/rectum, bladder or ovary initiating a (new) course of chemotherapy with a minimum intent of 3 months therapy

Exclusion Criteria:

* Required systematic venous thromboprophylaxis or curative treatment with anti-coagulant or thrombolytic;
* High risk of bleeding;
* Severe renal impairment (estimated creatinine clearance \<30 mL/min);
* ECOG (Eastern Cooperative Oncology Group) performance status 3 \& 4;
* Major surgery within 4 weeks before randomization;
* Known hypersensitivity to unfractionated heparin \[UFH\] or low molecular weight heparin \[LMWH\].

The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial

Answer: B