Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: An Open Label, Sequential Cohort, Dose Escalation Study to Evaluate the Safety and Efficacy of AMG 531 in Thrombocytopenic Subjects With Low or Intermediate-1 Risk Myelodysplastic Syndrome (MDS)
Brief Summary: The purpose of this study is to evaluate the safety and tolerability of romiplostim in thrombocytopenic patients with low or Intermediate-1 risk MDS. In addition, the study will evaluate the platelet response to romiplostim.


Options:
A: Arm Label: WAS patients receiving Promacta; Type: EXPERIMENTAL; Interventions: Drug: Promacta | Arm Label: WAS patients for blood drawing only; Type: EXPERIMENTAL; Interventions: Diagnostic Test: blood drawing in patients with WAS | Arm Label: healthy children for blood drawing only; Type: PLACEBO_COMPARATOR; Interventions: Diagnostic Test: blood drawing in healthy controls | Intervention Type: DRUG; Name: Promacta; Assigned to Arm(s): WAS patients receiving Promacta | Intervention Type: DIAGNOSTIC_TEST; Name: blood drawing in patients with WAS; Assigned to Arm(s): WAS patients for blood drawing only | Intervention Type: DIAGNOSTIC_TEST; Name: blood drawing in healthy controls; Assigned to Arm(s): healthy children for blood drawing only
B: Arm Label: Part A: 300 µg romiplostim; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part A: 700 µg romiplostim; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part A: 1000 µg romiplostim; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part A: 1500 µg romiplostim; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part B: 750 µg romiplostim SC QW; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part B: 750 µg romiplostim SC Q2W; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Arm Label: Part B: 750 µg romiplostim IV Q2W; Type: EXPERIMENTAL; Interventions: Drug: Romiplostim | Intervention Type: DRUG; Name: Romiplostim; Assigned to Arm(s): Part A: 1000 µg romiplostim, Part A: 1500 µg romiplostim, Part A: 300 µg romiplostim, Part A: 700 µg romiplostim, Part B: 750 µg romiplostim IV Q2W, Part B: 750 µg romiplostim SC Q2W, Part B: 750 µg romiplostim SC QW
C: Arm Label: 750 mcg AMG 531; Type: ACTIVE_COMPARATOR; Interventions: Biological: AMG 531 | Arm Label: Placebo Part B; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Arm Label: Placebo Part A; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Arm Label: 500 mcg AMG 531; Type: ACTIVE_COMPARATOR; Interventions: Biological: AMG 531 | Arm Label: 750 mcg AMG531 Part B; Type: ACTIVE_COMPARATOR; Interventions: Biological: AMG 531 | Intervention Type: BIOLOGICAL; Name: AMG 531; Assigned to Arm(s): 500 mcg AMG 531, 750 mcg AMG 531, 750 mcg AMG531 Part B | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Placebo Part A, Placebo Part B
D: Arm Label: Intervention Arm; Type: EXPERIMENTAL; Interventions: Drug: Tranexamic acid (TXA). | Arm Label: Control Arm; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Intervention Type: DRUG; Name: Tranexamic acid (TXA).; Assigned to Arm(s): Intervention Arm | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Control Arm

Answer: B