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Baseline characteristics and treatment response of patients from the Philippines in the CHIMES study
Jose C Navarro1, Herminigildo H Gan, Annabelle Y Lao
1Neurology and Psychiatry, University of Santo Tomas Hospital, Manila, Philippines.
Insights
This study found MLC601 treatment effective for ischemic stroke patients in the Philippines. The Philippine cohort showed improved outcomes with MLC601, suggesting its benefit in specific patient groups.
Area of Science:
- Neurology
- Clinical Trials
- Pharmacology
Background:
- The CHIMES study investigated MLC601 for intermediate-severity ischemic stroke.
- The Philippines contributed significantly to the study cohort (46%).
- This analysis focuses on the Philippine subgroup to inform future trial design.
Purpose of the Study:
- To characterize patients from the Philippines in the CHIMES study.
- To compare their treatment responses to MLC601 against the global cohort.
- To identify factors influencing outcomes in this subgroup.
Main Methods:
- Utilized the CHIMES dataset for comparative analysis.
- Compared baseline characteristics, treatment delays, and outcomes (modified Rankin Score, NIHSS, BI) at 3 months.
- Analyzed treatment effects of MLC601 versus placebo.
Main Results:
- Philippine patients were younger, had more women, worse NIHSS scores, and longer treatment delays.
- Age, baseline NIHSS, and treatment delay predicted 3-month modified Rankin Score.
- MLC601 showed a statistically significant benefit in modified Rankin Score shift (aOR 1.41) and secondary endpoints.
Conclusions:
- Treatment effects of MLC601 in the Philippine cohort favored the active drug.
- The observed benefits may be linked to the inclusion of patients with predictors of poorer outcomes.
Background:
The CHIMES Study compared MLC601 with placebo in patients with ischemic stroke of intermediate severity in the preceding 72 h. Sites from the Philippines randomized 504 of 1099 (46%) patients in the study. We aimed to define the patient characteristics and treatment responses in this subgroup to better plan future trials.
Methods:
The CHIMES dataset was used to compare the baseline characteristics, time from stroke onset to study treatment initiation, and treatment responses to MLC601 between patients recruited from Philippines and the rest of the cohort. Treatment effect was analyzed using end-points at month 3 as described in the primary publication, that is, modified Rankin Score, National Institutes of Health Stroke Scale, and Barthel Index.
Results:
The Philippine cohort was younger, had more women, worse baseline National Institutes of Health Stroke Scale, and longer time delay from stroke onset to study treatment compared with the rest of the cohort. Age (P = 0·003), baseline National Institutes of Health Stroke Scale (P < 0·001), and stroke onset to study treatment initiation (P = 0·016) were predictors of modified Rankin Score at three-months. Primary analysis of modified Rankin Score shift was in favor of MLC601 (adjusted odds ratio 1·41, 95% confidence interval 1·01-1·96). Secondary analyses were likewise in favor of MLC601 for modified Rankin Score dichotomy 0-1, improvement in National Institutes of Health Stroke Scale (total and motor scores), and Barthel Index.
Conclusions:
The treatment effects in the Philippine cohort were in favor of MLC601. This may be due to inclusion of more patients with predictors of poorer outcome.
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