Long-term cognitive function change among breast cancer survivors

Area of Science:

• Neuroscience
• Oncology
• Public Health

Background:

• Cognitive decline is a significant concern for breast cancer patients.
• Understanding cognitive change trajectories in survivors is crucial for public health.
• Longitudinal data on cognitive function post-breast cancer diagnosis is needed.

Purpose of the Study:

• To investigate cognitive function changes in breast cancer survivors from 18 months to 3 years after diagnosis.
• To identify factors influencing cognitive improvement trajectories.

Main Methods:

• Longitudinal study of 1,300 breast cancer survivors from the Shanghai Breast Cancer Survivor Study.
• Cognitive function evaluated using a battery of measurements at 18 and 36 months post-diagnosis.
• Analysis of cognitive scores in attention, executive function, immediate memory, and delayed memory.

Main Results:

• Significant improvements observed in attention, executive function, immediate memory, and delayed memory from 18 to 36 months post-diagnosis.
• Cognitive improvements were noted in survivors who received treatments (surgery, radiotherapy, tamoxifen, chemotherapy).
• Survivors receiving neither chemotherapy nor tamoxifen did not show similar improvements; comorbidity was inversely associated with cognitive gains.

Conclusions:

• Cognitive functions, especially immediate and delayed verbal episodic memory, significantly improve in breast cancer survivors between 18 and 36 months post-diagnosis.
• Receipt of cancer treatments is associated with these cognitive improvements.
• Further research into the mechanisms and influencing factors of cognitive recovery is warranted.