Lessons From the Communication Bridge Trials: Advancing Meaningful Dyadic Interventions Toward Implementation

This review describes the historical motivations, development, and evolution of the Communication Bridge (CB) research program, which is designed to maximize quality of life and minimize burden for individuals living with dementia and their communication partners. The CB trials described comprise a series of dyadic, nonpharmacologic interventions supporting individuals with primary progressive aphasia (PPA) and their communication partners. Across trials, the CB intervention integrates speech-language, educational, and psychosocial approaches to maximize communication participation, confidence, and self-efficacy.

The CB trials are contextualized within the National Institutes of Health (NIH) Stage Model for Behavioral Intervention Development and the Readiness Assessment for Pragmatic Trials (RAPT) framework to illustrate a systematic pathway from feasibility to implementation readiness. Three sequential telehealth-delivered trials are described: CB1, a pilot feasibility study; CB2, an international randomized controlled trial (RCT); and CB3, an ongoing international RCT designed with clinical practice-aligned procedures to advance readiness for future implementation testing.

Application of the NIH Stage Model and the RAPT framework highlights how staged intervention development can support rigor, reproducibility, and implementation readiness in behavioral intervention research for neurodegenerative conditions. Across trials, person-centered outcomes demonstrated meaningful benefit and maintenance over time, while iterative design refinements addressed feasibility, fidelity, acceptability, and scalability.

The CB research program illustrates how implementation science frameworks can be applied to advance meaningful, dyadic interventions for PPA toward real-world use. Lessons from early-phase trials underscore the importance of person-centered outcomes, staged rigor, and early attention to implementation considerations, with implications for future PPA intervention research and broader speech-language clinical trials.