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Chemotherapy as predictor of compliance
J R Jacobs1, R R Casiano, D E Schuller
1Department of Otolaryngology, Wayne State University, Detroit, MI 48201.
Journal of Surgical Oncology
|March 1, 1994
Summary
Patient adherence to complex cancer treatments is crucial. Completing chemotherapy courses improved radiotherapy compliance in head and neck cancer patients, suggesting a link between treatment adherence and outcomes.
Area of Science:
- Oncology
- Clinical Trials
Background:
- Patient compliance with complex adjuvant therapy is a significant challenge in head and neck cancer treatment.
- Adjuvant therapy protocols often involve multiple treatment modalities, increasing the potential for patient non-adherence.
Purpose of the Study:
- To evaluate the impact of a multicourse chemotherapy regimen on patient compliance with subsequent radiotherapy in advanced head and neck squamous cell carcinoma.
- To determine if adherence to neoadjuvant chemotherapy influences adherence to adjuvant radiotherapy.
Main Methods:
- A phase III prospective randomized trial was conducted involving patients with advanced stage III and IV squamous cell carcinoma of the head and neck.
- The trial compared standard treatment (surgery and postoperative radiotherapy) with the addition of three courses of cisplatin-based combination chemotherapy administered after surgery and before radiotherapy.
- Protocol variations were retrospectively classified as minor acceptable, major acceptable, and major unacceptable.
Main Results:
- Patients who completed all three courses of chemotherapy showed a lower incidence of major unacceptable variation in radiotherapy (15% vs. 19%, P < 0.10) compared to those who did not.
- Crucially, patients completing fewer than three chemotherapy courses exhibited a significantly higher incidence of major unacceptable radiotherapy variation (33%, P < 0.001), even after controlling for multiple clinical and institutional factors.
- This suggests a strong correlation between chemotherapy completion and radiotherapy adherence.
Conclusions:
- Compliance with a multicourse adjuvant chemotherapy regimen is a significant predictor of subsequent compliance with radiotherapy in head and neck cancer patients.
- Optimizing chemotherapy delivery and completion may improve overall treatment adherence and potentially enhance patient outcomes in this population.