T-Series co-owner Krishan Kumar's wife Tanya revealed their 20-year-old daughter Tishaa, who passed away in July, never had cancer. "She had a vaccine at age 15.5 which possibly triggered an autoimmune situation, which was wrongly diagnosed (we didn't know this at the time)," Tanya wrote on Instagram. She urged parents to get a second opinion before going for a biopsy.