Heterogeneity in response to treatment across tinnitus phenotypes

Area of Science:

• Audiology
• Medical Psychology
• Personalized Medicine

Background:

• Chronic tinnitus presents significant clinical heterogeneity, complicating patient management.
• Identifying distinct patient subgroups (phenotypes) is crucial for predictable treatment responses.

Purpose of the Study:

• To model treatment response heterogeneity among tinnitus patient phenotypes.
• To identify patient subgroups based on their response to a multimodal intervention.

Main Methods:

• 989 tinnitus patients completed 14 questionnaires assessing 64 variables pre- and post-intervention.
• Phenotyping, visualization, and subgroup extraction based on treatment change were employed.

Main Results:

• Four distinct baseline phenotypes were identified, with most showing general improvement post-treatment.
• Significant intra-phenotype heterogeneity was observed, with five distinct clusters of treatment response patterns.
• Treatment effect patterns were associated with baseline phenotypes.

Conclusions:

• This exploratory study provides a framework for personalized tinnitus treatment strategies.
• Identifying patient subgroups can advance personalized medicine for chronic conditions.
• Future research should include control groups to validate subgroup-specific treatment efficacy.