The invention provides a method of treatment comprising reducing therapy-induced adverse effects (TIAE), including chemotherapy-induced adverse effects (CIAE), such as chemotherapy-induced peripheral neuropathy (CIPN) and/or chemotherapy-induced cardiovascular adverse effects (CICAE) in a subject being treated with a CIAE-inducing anti-cancer active ingredient by co-administering to the subject a pharmaceutically effective amount of a NCS-1-protective composition. Related pharmaceutical compositions, diagnostics and screening techniques are also provided.