Behavioral cancer pain intervention dosing: results of a Sequential Multiple Assignment Randomized Trial

Area of Science:

• Oncology
• Behavioral Medicine
• Pain Management

Background:

• Behavioral interventions effectively manage cancer pain, but optimal dosing remains unclear, limiting clinical adoption.
• There is a need to establish evidence-based dosing strategies for behavioral pain management in cancer patients.

Purpose of the Study:

• To evaluate the efficacy of varying doses of Pain Coping Skills Training (PCST) and response-based dose adaptation for pain reduction in women with breast cancer.
• To determine if a higher initial dose (PCST-Full) or adaptive dosing strategies yield more significant and durable pain relief.

Main Methods:

• A Sequential Multiple Assignment Randomized Trial (SMART) involving 327 women with stage I-IIIC breast cancer and significant pain (>5/10).
• Participants were randomized to PCST-Full (5 sessions) or PCST-Brief (1 session), with subsequent dose adjustments based on response (responders to maintenance/no dose, non-responders to increased/maintenance dose).
• Pain severity was assessed at baseline, 5-8 weeks, and 6 months post-intervention.

Main Results:

• PCST-Full demonstrated significantly greater mean percent pain reduction compared to PCST-Brief initially.
• While all adaptive sequences showed pain reduction, participants initially receiving PCST-Full exhibited greater pain reduction at the 6-month follow-up.
• Intervention sequences including PCST-Full showed the most durable pain reduction.

Conclusions:

• Varying doses of PCST, particularly higher initial doses and adaptive adjustments, can effectively reduce cancer-related pain over time.
• PCST with response-based dose adaptation offers a sustainable approach to managing pain in breast cancer patients.
• Findings support the integration of tailored behavioral interventions for improved long-term pain management in oncology.