A significant study published in the journal ‘Cancer’ of the American Cancer Society presents an in-depth analysis of breast cancer survival rates in India. This comprehensive research encompassed a sample of 17,331 breast cancer patients diagnosed between 2012 and 2015, across 11 different Population-Based Cancer Registries (PBCRs) in India. These registries include Kollam, Thiruvananthapuram, Mumbai, Wardha, Ahmedabad-Urban, Kamrup-Urban, Manipur, Mizoram, Sikkim, Tripura, and Pasighat.

The study’s findings indicate that the five-year age-standardized relative survival rate for breast cancer in India is 66.4%. This rate, however, exhibits considerable regional variation. Mizoram (74.9%), Ahmedabad-Urban (72.7%), Kollam (71.5%), and Thiruvananthapuram (69.1%) reported survival rates above the national average. Conversely, Pasighat recorded the lowest rate at 41.9%.

One of the key insights from the study is the disparity in survival rates based on the stage of cancer at diagnosis. Patients diagnosed at an early, local stage showed a 4.4 times higher five-year survival rate compared to those diagnosed at a distant stage. Age also plays a crucial role, with patients older than 65 years having a 16% lower chance of survival compared to younger patients aged 15-39 years.

The study underlines that breast cancer is the most prevalent cancer among Indian women, constituting over one-quarter of all female cancers. It draws attention to the challenges faced in India, such as delayed diagnosis and limited access to advanced treatment options like targeted therapies and immunotherapies, particularly in low to middle-income regions.

Comparatively, breast cancer survival rates in India lag behind developed countries like the United States, where the survival rate is around 90.2%. However, the rates in regions like Mizoram, Ahmedabad-Urban, and Kollam are comparable to other countries in the South East Asian region.

The research also highlights the broader global context, noting that breast cancer is the leading cause of cancer in women worldwide. It emphasises the increasing burden of breast cancer in the South-East Asia region, projecting a rise in breast cancer deaths by 61.7% by 2040.

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