A Phase 3 interventional study of Narlumosbart and Denosumab in Giant Cell Tumor of Bone, sponsored by Shanghai JMT-Bio Inc.. Not yet recruiting at 1 site in China. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2023-04-19.
Sponsored by Shanghai JMT-Bio Inc. (part of CSPC Pharmaceutical Group Limited) · Phase 3, Interventional, and Treatment
This is a phase Ⅲ, multi-center, randomized, double-blind, active-controlled study to evaluate the efficacy and safety of narlumosbart (JMT103) in patients with unresectable or surgically difficult giant cell tumor of bone (GCTB). This clinical trial study hypothesizes narlumosbart administration groups are not inferior to active control administration groups.
23 studies on the registry are indexed under Giant Cell Tumor of Bone; 7 are open to participants now.
This study's planned enrollment of 146 is above the median of 43 across 16 interventional studies indexed under Giant Cell Tumor of Bone.
Browse Giant Cell Tumor of Bone studies →Shanghai JMT-Bio Inc. is the lead sponsor of 42 studies on the registry; 29 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients will receive narlumosbart 120 mg subcutaneously (SC) once every 4 weeks (Q4W) with a loading dose of 120 mg SC on day 8 and day 15 of the first cycle until one of the following occurred: complete tumor resection, disease progression, intolerable toxicity, decision by the patient to discontinue, or decision by the investigator that the patient could no longer benefit from the treatment.
Drug: Narlumosbart
Patients will receive denosumab 120 mg subcutaneously (SC) once every 4 weeks (Q4W) with a loading dose of 120 mg SC on day 8 and day 15 of the first cycle until one of the following occurred: complete tumor resection, disease progression without clinical benefit, decision by the patient to discontinue, or decision by the investigator that the patient could no longer benefit from the treatment.
Drug: Denosumab
Administered by subcutaneous injection. Dietary Supplement: Calcium/Vitamin D. All patients should be adequately supplemented with calcium and vitamin D (at least 500 mg of calcium and 400 IU of vitamin D), except in the case of pre-existing hypercalcemia.
Also known as: JMT103
Administered by subcutaneous injection. Dietary Supplement: Calcium/Vitamin D. All patients should be adequately supplemented with calcium and vitamin D (at least 500 mg of calcium and 400 IU of vitamin D), except in the case of pre-existing hypercalcemia.
Also known as: XGEVA
Percentage of Patients With Giant Cell Objective Tumor Response
Time frame: From enrollment until 12 weeks
Percentage of Patients With Giant Cell Objective Tumor Response
Time frame: Throughout the study period, up to approximately 4 years
Disease Control Rate (DCR)
Time frame: Up to approximately 4 years
Time to Response (TTR)
Time frame: Up to approximately 4 years
Duration of Response (DOR)
Time frame: Up to approximately 4 years
Time to Progression (TTP)
Time frame: Up to approximately 4 years
Percentage of Patients Downstaging the Planned Surgical Procedure
Time frame: From enrollment until surgery, up to approximately 4 years
Time to First Tumor Surgery
Time frame: From enrollment until the first tumor surgery, up to approximately 4 years
Changes in Brief Pain Inventory Short Form (BPI-SF) score
Time frame: From enrollment until the last dose, up to approximately 4 years
Types and Proportion of Key Adverse Reactions
Time frame: From the first dose of study drug until 90 days after the last dose, up to approximately 4 years
Serum JMT103 Concentrations
Time frame: Days 8 of Cycle 1, Day 1 of Cycle 2, 3, 4, 5, 6, and 90 days after the last dose (each cycle is 28 days)
Number of Patients with Anti-JMT103 Antibodies
Time frame: Day 1 of Cycle 1, 2, 4, 6, and 90 days after the last dose (each cycle is 28 days)
Plan to share: No
No publications or documents are linked to this record.
Start is estimated for Apr 2023; primary completion for Jun 2028, 62 months later.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Apr 2023. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Narlumosbart