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Using Romiplostim to Treat Low Platelet Counts Following Chemotherapy and Autologous Hematopoietic Cell Transplantation in People With Blood Cancer

An Open-Label, Pilot Study of Romiplostim for Conditioning Regimen-Related Thrombocytopenia After High-Dose Therapy and Autologous Hematopoietic Cell Transplantation

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04478123
Enrollment
62
Registered
2020-07-20
Start date
2020-07-14
Completion date
2023-06-08
Last updated
2024-02-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HDT-AHCT, Hodgkin Lymphoma, Multiple Myeloma, Non-Hodgkin Lymphoma

Keywords

High-Dose Therapy, Autologous Hematopoietic Cell Transplantation, Romiplostim, Thrombocytopenia, 20-180

Brief summary

The purpose of this study is to see if the study drug, romiplostim, helps low platelet count caused by the standard blood cancer treatment of chemotherapy and autologous hematopoietic cell transplantation. This study will also look at whether romiplostim can decrease the number of times the participant needs to return to the clinic for platelet transfusions to treat their low platelet count. In addition, the researchers will determine how safe it is to give romiplostim to people with blood cancer who have received treatment with chemotherapy and autologous hematopoietic cell transplantation.

Interventions

DRUGRomiplostim

Romiplostim 3.0 mcg/kg SC on Day +1 and Romiplostim 2.0 mcg/kg SC on Day +8 after HDT-AHCT. Beyond Day +8, patients will be treated weekly until platelet count is \>50,000/mcL, without any platelet transfusions in the prior 48 hours. All doses after the second Romiplostim dose will be titrated as per Table 3, based on weekly CBC/platelet counts. Patients will receive a maximum of six weekly doses of romiplostim.

Sponsors

Amgen
CollaboratorINDUSTRY
Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

A single-center, open-label, pilot study of romiplostim for patients undergoing HDT-AHCT.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult patients ≥ 18 years old diagnosed with multiple myeloma (MM), any subtype of Hodgkin lymphoma (HL), or any subtype of non-Hodgkin lymphoma (NHL) * For MM, the conditioning regimen used will be high-dose melphalan.°For HL and NHL, the conditioning will be one of the following high-dose regimens: BEAM, CBV, or TBC. * Other conditioning regimens not listed above, or variations of the above conditioning regimens, may be allowed at the discretion of the principal investigator if the regimen is considered myeloablative. * Adequate organ function is required, defined as follows: * Serum bilirubin ≤ 2 mg/dL, unless benign congenital hyperbilirubinemia. * AST, ALT, and alkaline phosphatase \< 3 times the upper limit of normal. * Creatinine clearance ≥ 40 ml/min (calculated by Cockcroft Gault) * LVEF ≥ 45% by MUGA or resting echocardiogram * Pulmonary function (FEV1 and corrected DLCO) ≥ 45% predicted. * Adequate performance status ECOG ≤ 2. * Ability to provide written informed consent. * Patients undergoing HDT-AHCT.

Exclusion criteria

* Patients with a previous diagnosis of a myeloid malignancy. * Patients for whom the treating oncologist will be using a non-standard platelet transfusion threshold during the AHCT. * Patients with a history of a prior symptomatic or incidental venous thromboembolic event (such as DVT or pulmonary embolism) within the prior 6 months are eligible if they are on and tolerating anti-coagulation, or greater than 6 months ago are eligible if they completed or are on and tolerating anti-coagulation. °A venous thrombotic event associated with a central venous catheter will not make the patient ineligible. * Patients with a history of symptomatic arterial thrombotic events such as myocardial infarction, ischemic cerebral vascular accident or transient ischemic attack in the past 6 months are ineligible. * Patients who had been diagnosed with Immune Thrombocytopenic Purpura (ITP) at any time prior to the AHCT are ineligible. * Patients with a serious concomitant medical condition that could interfere with the conduct of the clinical trial, such as unstable angina, renal failure requiring hemodialysis, or active infection requiring IV antibiotics. * Previous use of romiplostim, PEGylated recombinant human megakaryocyte growth and development factor, eltrombopag, recombinant human TPO, any other TPO receptor agonist, or any investigational platelet producing agent. * Females who are pregnant or breastfeeding or planning to become pregnant or breastfeed during treatment and for an additional 30 days after treatment discontinuation or longer if required by prescribing information for chemotherapy received during the study. * Patients unwilling to use highly effective contraception during the study period and for the duration required by prescribing information for chemotherapy(ies) administered during the study.

Design outcomes

Primary

MeasureTime frameDescription
Number of Days Post HDT-AHCT Requiring Transfusions or Grade 4 CTCAE Thrombocytopeniaup to 42 daysCommon Terminology Criteria for Adverse Events (CTCAE) Version 5.

Secondary

MeasureTime frame
Number of Platelet Transfusions Per Participant Issued During the AHCT Admissionup to 100 days from AHCT

Countries

United States

Participant flow

Participants by arm

ArmCount
Romiplostim
Patients will be enrolled prior to admission for High-Dose Therapy and Autologous Hematopoietic Cell Transplantation (HDT-AHCT), and they will undergo their planned HDT-AHCT for their respective hematologic malignancy as per institutional standards.
62
Total62

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyNE1
Overall StudyPt withdrawal or refusal before begin prot txt2

Baseline characteristics

CharacteristicRomiplostim
Age, Continuous63 years
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
59 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
3 Participants
Race (NIH/OMB)
Black or African American
6 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
White
49 Participants
Region of Enrollment
United States
62 Participants
Sex: Female, Male
Female
28 Participants
Sex: Female, Male
Male
34 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
7 / 62
other
Total, other adverse events
62 / 62
serious
Total, serious adverse events
0 / 62

Outcome results

Primary

Number of Days Post HDT-AHCT Requiring Transfusions or Grade 4 CTCAE Thrombocytopenia

Common Terminology Criteria for Adverse Events (CTCAE) Version 5.

Time frame: up to 42 days

ArmMeasureValue (MEDIAN)
RomiplostimNumber of Days Post HDT-AHCT Requiring Transfusions or Grade 4 CTCAE Thrombocytopenia6 days
Secondary

Number of Platelet Transfusions Per Participant Issued During the AHCT Admission

Time frame: up to 100 days from AHCT

ArmMeasureValue (MEDIAN)
RomiplostimNumber of Platelet Transfusions Per Participant Issued During the AHCT Admission2 number of platelet transfusions per pt

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026