There are multiple definitions:

1. catabolite gene activator(English)

   • Genetics

2. Compressed Gas Association(English)

3. chromogranin A(English)

   • CTS

4. Comprehensive Geriatric Assessment(English)

   • may help stratify prognosis in TAVR
   • GASS-TAVR, BADL, EAI, BMI, FI, MNA, CKD-EPI, eGFR, GASS, IADL, MPI, PASP, TAVR, MNA-SF
   • Gerontology/Geriatrics, Abuse of elderly, Frailty, Cardiology, Prognosis, Classification
   • https://doi.org…/ijerph19031709
   • https://doi.org…cin.2025.12.018