Double Dose of Third-generation EGFR-TKI Plus Intrathecal Pemetrexed Versus Double Dose of Third-generation EGFR-TKI in Patients With LM Progression Following the Treatment of Routine Dose of Third-generation EGFR-TKI

Fujian Provincial Cancer Hospital

Status and phase

Not yet enrolling

Phase 2

Conditions

Leptomeningeal Metastasis

Treatments

Drug: Intrathecal Pemetrexed

Drug: Double Dose of Third-generation EGFR-TKI

Study type

Interventional

Funder types

Other

Identifiers

NCT06441045

SQS2024-175

Details and patient eligibility

About

We aim to compare the efficacy and safety of double Dose of Third-generation EGFR-TKI Plus Intrathecal Pemetrexed Versus double Dose of Third-generation EGFR-TKI in patients with leptomeningeal progression following the treatment of routine dose of EGFR-TKI,

Enrollment

112 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Age 18 years at the time of signing informed consent, both sexes;
advanced or metastatic NSCLC, TNM stage IV according to the eighth edition of IASLC 2015;
with EGFR sensitive mutation (exon 19 deletion or L858R mutation), LM progression after conventional doses of three generation EGFR targeted agents (after 1 + 3,2 + 3 or direct 3-generation targeted therapy). There is no limit on the number of chemotherapy lines. The enrolled patients required brain parenchyma and extracranial lesion stable
ECOG PS score: 0-3
Normal main organ function, That is, the following criteria are met:
1. routine blood examination (no blood transfusion within 14 days, no hematopoietic stimulating factor drugs are corrected state): hemoglobin (Hb) 90g / L; Absolute neutrophil count (ANC) 1.5109 / L; Platelet (PLT) 100109 / L; White blood cell count (WBC) 3.0109 / L;
2. Biochemical examination: alanine transaminotransferase (ALT) and alanine transaminotransferase (AST) 2.5 upper limit of normal (ULN); Serum total bilirubin (TBIL) 1.5 ULN; Serum creatinine (Cr) of 1.5 ULN or creatinine clearance of 50 ml/min; If any liver metastasis, Then, the total bilirubin 3 ULN, ALT and AST 5 ULN; C) Coagulation function: activated partial thromboplastin time (APTT), international normalized ratio (INR), prothrombin time 12 (PT) 1.5 ULN;
d) Doppler ultrasound assessment: left ventricular ejection fraction (LVEF) 50%;
If previously treated with chemotherapy, A washout period of at least 21 days between the last chemotherapy dose and enrollment (if the patient does not receive radiotherapy) is required; Patients who treated brain parenchymal metastases with local radiotherapy or surgery before enrollment, Must be completed and fully recovered from the acute toxicity of radiotherapy / surgery. A minimum 14-day washout period is required between the end of radiotherapy and enrollment. A minimum 30-day washout period is required between the end of surgery and enrollment.
Expected survival of not less than 3 months
patients can swallow oral medication (if not oral, can be ground by gastric tube)
Women of childbearing age must have negative pregnancy test (serum or urine) within 14 days before observation period and 3 months after the last administration; for men, they should undergo surgical sterilization or agree to use appropriate contraception during the observation period and 3 months after the last administration of study drug
patients voluntarily participate and sign an informed consent (or legal agent), expected to have good compliance and able to cooperate with the study according to the protocol requirements.

Exclusion criteria

Major surgery within 4 weeks before starting study treatment or scheduled for surgery during the study program;
Human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS)
patient with active bacterial infection, fungal infection (intravenous antibiotics required at initiation of study treatment);
past history of interstitial lung disease, drug-induced interstitial lung disease, radiation pneumonia requiring steroid therapy, Or any signs of clinically active interstitial lung disease;
arterial / venous thrombosis events within 6 months prior to enrollment, Such as cerebrovascular accident (including temporary ischemic attack, cerebral hemorrhage, cerebral infarction), deep vein thrombosis and pulmonary embolism;
congestive heart failure (NYHA grade> 2); unstable angina pectoris; a myocardial infarction within 3 months prior to signing an ICF; any 12 supraventricular or ventricular arrhythmia requiring treatment or intervention; Mean QTcF> 470ms from 3 ECG recordings
other systemic malignancies in the last 5 years, (Except for cured skin basal cell carcinoma and cervical situ carcinoma and ovarian carcinoma);
Use drugs or supplements known to be the main cause of CYP3A4.
Persons known to be allergic to any test drug or its excipients;
pregnant, lactating, reproductive patients unwilling to use effective contraception; ●a clear prior history of neurological or psychiatric disorders, including epilepsy and dementia;
other conditions considered inappropriate by the investigator.