Intra-pemetrexed Alone or Combined With Concurrent Radiotherapy for Leptomeningeal Metastasis
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05305885 |
Recruitment Status :
Recruiting
First Posted : March 31, 2022
Last Update Posted : September 30, 2022
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Intrathecal chemotherapy is one of the mainstay treatment options for leptomeningeal metastases. Owing to the limited number of agents available for intrathecal chemotherapy, it is crucial to find a novel agent with efficacy and safety. In our phase 1 study, intrathecal pemetrexed showed controllable toxicities and potential promising efficacy for refractory leptomeningeal metastases from non-small-cell lung cancer patients. In our further study, intrathecal pemetrexed combined with involved-field radiation therapy was administered as the first-line intrathecal chemotherapy for leptomeningeal metastases from solid tumors. In this study, intrathecal pemetrexed combined with involved-field radiation therapy showed feasibility and controllable adverse events. It has been proved that pemetrexed as a novel intrathecal drug exhibited promising antitumor effects in cerebrospinal fluid. Moreover, the concomitant therapeutic modality is an optimal treatment option for leptomeningeal metastases from solid tumors.
Central nervous system radiotherapy is a part of the specific treatment of leptomeningeal metastases. Radiotherapy has been proved to improve neurologic function and control of parenchymal brain metastases in leptomeningeal metastases treatment. Additionally, radiotherapy is revealed to improve the efficacy and attenuate toxicity of intrathecal chemotherapy as a result of normal cerebrospinal fluid reestablishing. However, it is still controversial whether radiotherapy can improve the overall survival. We conduct this study to further demonstrate the efficacy and safety of intrathecal pemetrexed administration for patients with leptomeningeal metastases from solid tumors by multicenter study. Furthermore, the study of effective treatment modality is of great significance. The safety and antitumor activity of intrathecal pemetrexed combined with involved-field radiation therapy and intrathecal pemetrexed alone were also compared to confirm an optimized therapeutic regimen.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Leptomeningeal Metastasis | Drug: Pemetrexed Radiation: Radiotherapy | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | An Open-label, Randomized, Multicenter Trial of Intrathecal-pemetrexed Combined With Concurrent Involved-field Radiotherapy and Intrathecal-pemetrexed Alone in Patients With Leptomeningeal Metastasis From Solid Tumors |
Actual Study Start Date : | August 19, 2022 |
Estimated Primary Completion Date : | October 2023 |
Estimated Study Completion Date : | July 2024 |

Arm | Intervention/treatment |
---|---|
Experimental: Group 1
Intrathecal administration, intraventricular administration or via lumbar puncture, pemetrexed plus dexamethasone, first induction intra-cerebrospinal fluid chemotherapy twice per week for 2 weeks, then once per week for 4 times, 6 weeks in total. Concurrent radiotherapy consisted of fractionated, conformal radiation given at a daily dose of 2 Gy. The planning volume consisted of sites of symptomatic disease, bulky disease observed on MRI, including the whole brain and basis cranii received 40 Gy in 20 fractions, 4 weeks in total, and/or segment of spinal canal received 40 Gy.
|
Drug: Pemetrexed
Intrathecal administration, intraventricular administration or via lumbar puncture, pemetrexed plus dexamethasone, first induction intra-cerebrospinal fluid chemotherapy twice per week for 2 weeks, then once per week for 4 times, 6 weeks in total. Radiation: Radiotherapy Concurrent radiotherapy consisted of fractionated, conformal radiation given at a daily dose of 2 Gy. The planning volume consisted of sites of symptomatic disease, bulky disease observed on MRI, including the whole brain and basis cranii received 40 Gy in 20 fractions, 4 weeks in total, and/or segment of spinal canal received 40 Gy. |
Experimental: Group 2
Intrathecal administration, intraventricular administration or via lumbar puncture, pemetrexed plus dexamethasone, first induction intra-cerebrospinal fluid chemotherapy twice per week for 2 weeks, then once per week for 4 times, 6 weeks in total.
|
Drug: Pemetrexed
Intrathecal administration, intraventricular administration or via lumbar puncture, pemetrexed plus dexamethasone, first induction intra-cerebrospinal fluid chemotherapy twice per week for 2 weeks, then once per week for 4 times, 6 weeks in total. |
- Clinical response rate [ Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 6 months. ]The response assessment in neuro-oncology criteria (RANO) proposal for response criteria of leptomeningeal metastasis was used to assess the clinical response in this study.
- Incidence of treatment-related adverse events [ Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 6 months. ]The incidence of treatment-related adverse events were measured for determining tolerability and safety. Adverse events (AEs) are evaluated according to the Common Terminology Criteria for Adverse Events (CTCAE, version 4.03). Events of grade 3-5 are defined as moderate and severe adverse events.
- Overall survival [ Time Frame: From the enrollment of this study until date of death from any cause, whichever came first, or the last follow-up (at least 7 months). ]Survival time was recorded since the date of patient enrollment. All patients were followed up until death or the end of the study.
- Neurological progression-free survival (NPFS) [ Time Frame: From date of randomization until the date of first documented neurological progression or date of death from any cause, whichever came first, assessed up to 6 months. ]NPFS was defined as time from the start of treatment until neurological progression or death. The neurological progression was determined based on the RANO proposal evaluation criteria which have been established and published on Neuro Oncol.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Patients with a confirmed or probable diagnosis of leptomeningeal metastasis according to European Association of Neuro-Oncology-European Society for Medical Oncology (EANO-ESMO) guidelines;Patients who have been definitely diagnosed as leptomeningeal metastasis according to cerebrospinal fluid cytology, or patients who got the clinical diagnosis by combining with neuroimaging, history of cancer, clinical manifestation, cerebrospinal fluid examination, etc.
- Participants with histologically or cytologically confirmed disease from solid tumors;
- No history of whole brain radiotherapy;
- Normal liver and kidney function; WBC≥4000/mm3, Plt≥100000/mm3.
Exclusion Criteria:
- Patients with primary tumor of hematological tumors or primary central germ cell tumors;
- Patients administrated with new molecular targeted therapy which is effective for leptomeningeal metastasis in 2 weeks;
- Patients with hydrocephalus or other factors suggestive of cerebrospinal fluid circulation obstruction;
- Patients with severe encephalopathy, grade 3 leukoencephalopathy, Glasgow Coma Scale less than 8 score;
- Patients with extensive and lethal systemic diseases with few treatment options;
- Patients with poor compliance, or for other reasons, the researchers considered unsuitable to participate in this clinical study.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05305885
Contact: Zhenyu Pan, PhD. | +8615804302753 | dr-zypan@163.com | |
Contact: Guozi Yang, PhD. | +8615804302755 | guoziyang_1982@163.com |
China, Jilin | |
The First Hospital of Jilin University | Recruiting |
Changchun, Jilin, China, 130021 | |
Contact: Zhenyu Pan, Professor +8615804302753 dr-zypan@163.com | |
Contact: Guozi Yang, Professor +8615804302755 guoziyang_1982@163.com |
Principal Investigator: | Zhenyu Pan, PhD. | The First Hospital of Jilin University |
Responsible Party: | Zhenyu Pan, Professor, The First Hospital of Jilin University |
ClinicalTrials.gov Identifier: | NCT05305885 |
Other Study ID Numbers: |
PMRT |
First Posted: | March 31, 2022 Key Record Dates |
Last Update Posted: | September 30, 2022 |
Last Verified: | September 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | All individual participant data that underlie results in a publication will be available to other researchers. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) Clinical Study Report (CSR) |
Time Frame: | Starting 6 months after publication. |
Access Criteria: | Individual participant data will be public accessable via contacting with principal investigator by email within 6 months after the trial complete. |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Leptomeningeal metastasis Malignant solid tumors Pemetrexed Intrathecal chemotherapy Radiotherapy |
Neoplasm Metastasis Meningeal Carcinomatosis Neoplastic Processes Neoplasms Pathologic Processes Meningeal Neoplasms Central Nervous System Neoplasms Nervous System Neoplasms |
Neoplasms by Site Nervous System Diseases Pemetrexed Antineoplastic Agents Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Folic Acid Antagonists Nucleic Acid Synthesis Inhibitors |