By 2050, one in five Americans, and a rapidly growing share of patients across Asia, Africa, and Latin America, will need cancer care from a system still built for the demographics of the 1950s.

The Textbook of Geriatric Oncology (2027 Edition), published by the AsiaPacific Geriatric Oncology Society (AGOS) and edited by Dr Purvish M. Parikh and Dr Ashok K. Vaid, is a comprehensive, first-of-its-kind reference built specifically for the clinical realities of the AsiaPacific region and the Global South, rather than adapted from Western frameworks.

Spanning five sections and sixty-eight chapters, and drawing on contributions from oncologists, geriatricians, and allied health professionals across multiple countries, this textbook confronts the gaps in geriatric oncology directly: outdated assessment tools, thin evidence bases, and health systems unequipped for a rapidly aging cancer population.

Inside this textbook, readers will find:

• Foundational chapters on the epidemiology, biology, and physiology of aging and cancer
• Practical guidance on geriatric assessment tools, frailty, sarcopenia, and polypharmacy
• Disease-specific chapters covering breast, lung, GI, GU, gynaecological, and haematological malignancies in older adults
• Treatment-specific considerations for surgery, radiotherapy, immunotherapy, and targeted agents
• Guidance on training, curriculum design, and building geriatric oncology services
• Perspectives on policy, research priorities, and emerging directions in the field

Honest about where evidence is thin and where population-specific data is still needed, this textbook offers region-relevant tools such as SCOPE-C and locally validated cutoffs for common assessment scores, developed and tested within Asian and Global South populations rather than imported wholesale.

Recommended for oncologists, geriatricians, trainees, nurses, pharmacists, and allied health professionals who care, or will soon care, for older adults with cancer.