A Phase 1 interventional study of Phase Ib Cohort 1: HDM2005 1.2 mg/kg + R-Len and Rituximab plus lenalidomide in Mantle Cell Lymphoma, sponsored by Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd.. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-13.
Sponsored by Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. (part of Huadong Medicine Co., Ltd.) · Phase 1, Interventional, and Treatment
This is a Phase Ib/III, multicenter, open-label clinical study of HDM2005 in combination with rituximab and lenalidomide in adult patients with relapsed or refractory mantle cell lymphoma.
Mantle cell lymphoma is a type of non-Hodgkin lymphoma. Some patients have disease that comes back after treatment or does not respond well to available treatments. This study is designed to evaluate whether adding HDM2005 to rituximab and lenalidomide may provide clinical benefit for patients with relapsed or refractory mantle cell lymphoma who have previously received an anti-CD20 antibody-containing regimen and at least one Bruton's tyrosine kinase inhibitor.
The study includes two parts. In the Phase Ib part, participants will receive HDM2005 in combination with rituximab and lenalidomide. The main goals of this part are to evaluate the safety and tolerability of the combination, assess preliminary anti-tumor activity, and determine the recommended dose of HDM2005 for the Phase III part.
In the Phase III part, eligible participants will be randomly assigned to receive either HDM2005 at the recommended Phase III dose in combination with rituximab and lenalidomide, or the investigator's choice of comparator treatment with rituximab plus lenalidomide or bendamustine plus rituximab. The main goals of the Phase III part are to compare the anti-tumor activity and clinical benefit of the HDM2005 combination with the comparator treatments. The main measures of efficacy include objective response rate and progression-free survival, assessed according to the 2014 Lugano response criteria. The study will also evaluate safety, pharmacokinetics, immunogenicity, overall survival, duration of response, and other measures of anti-tumor activity.
1,220 studies on the registry are indexed under Lymphoma, Mantle-Cell; 154 are open to participants now.
This study's planned enrollment of 40 is close to the median of 37 across 1,001 interventional studies indexed under Lymphoma, Mantle-Cell.
Browse Lymphoma, Mantle-Cell studies →Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. is the lead sponsor of 50 studies on the registry; 38 are open to participants now.
Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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.
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.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
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.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
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.
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.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
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.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
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.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
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.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
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.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
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.
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.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
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.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Allogeneic and autologous transplant
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GVHD (graft-versus-host disease)
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
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.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Washout period
A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants in this Phase Ib cohort will receive HDM2005 1.2 mg/kg in combination with rituximab and lenalidomide during induction treatment.
Drug: Phase Ib Cohort 1: HDM2005 1.2 mg/kg + R-Len
Participants in this Phase Ib cohort will receive HDM2005 1.4 mg/kg in combination with rituximab and lenalidomide during induction treatment.
Drug: Phase Ib Cohort 2: HDM2005 1.4 mg/kg + R-Len
HDM2005 will be administered in combination with rituximab and lenalidomide.
Drug: HDM2005 plus rituximab and lenalidomide
Rituximab plus lenalidomide is used as part of the HDM2005 combination regimen as control arm.
Drug: Rituximab plus lenalidomide
HDM2005 will be administered in combination with rituximab and lenalidomide.
Also known as: HDM2005 + R-Len
Drug pages: Rituximab · Lenalidomide
Rituximab plus lenalidomide is used as part of the HDM2005 combination regimen and may also be selected as comparator treatment in the Phase III part.
Also known as: R-Len
HDM2005 will be administered in combination with rituximab and lenalidomide.
Also known as: HDM2005 + R-Len
Drug pages: HDM2005 · Rituximab · Lenalidomide
HDM2005 will be administered in combination with rituximab and lenalidomide.
Also known as: HDM2005 + R-Len
Phase Ib: Incidence and severity of adverse events
Incidence and severity of adverse events, serious adverse events, and adverse events of special interest will be assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events, version 5.0. Dose interruptions, dose modifications, laboratory test results, vital signs, and other safety assessments will also be evaluated.
Time frame: From the date of first dose until end of treatment, assessed up to 12 months.
Phase Ib: Objective response rate assessed by investigator
Objective response rate is defined as the proportion of participants who achieve complete response or partial response as assessed by the investigator according to the 2014 Lugano response criteria.
Time frame: From the first dose of study treatment until disease progression, or other protocol re-specified reasesons, whichever occurs first, assessed up to 11 months.
No study locations are listed for this record.
Start is estimated for Jul 2026; primary completion for Aug 2027, 13 months later.
Of 55 industry-sponsored phase 1 interventional studies under Lymphoma, Mantle-Cell, half reached primary completion within 57 months of starting (the median), counting those still running; a quarter within 31 and three quarters within 71. This study's planned 13 months is below that.
Counting every sponsor, half of 128 studies reached it within 61 months; a quarter within 36 and three quarters within 82.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drugs tested here: HDM2005 · Rituximab · Lenalidomide
Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. →