Pulmonary Rehabilitation in Advanced Lung Cancer Survivors

Lung cancer (LC) is the second most common cancer in the world, (1) and the third most common cancer in the United States of America (USA) (2). Because more lung cancer screenings are being done (3-5) and because there have been advances in treatments, people will all stages of LC are living longer, including those with advanced LC. Research has shown that fatigue and breathing issues are commonly experienced by LCS (6). These symptoms can hurt the long-term health and quality of life of LCS (6-8). Currently, there are not many interventions that are used to help these symptoms for LCS.

For people with non-cancer-related respiratory disease, like chronic obstructive pulmonary disease (COPD), a type of supportive treatment called pulmonary rehabilitation (PR) can improve symptoms like difficulty breathing, fatigue, difficulty exercising, and health-related quality of life (9-11). PR is a holistic treatment plan that includes a full assessment and is then personalized to fit each person's needs. This could include things like exercise training, education, and behavior change (12). PR is considered standard-of-care for people with COPD (13). PR includes physical activity, which is something that is encouraged in all cancer survivors.

There is not much research that talks about the barriers to physical activity in survivors of lung cancer, although fatigue may be one of the most significant ones (14). Doctors may also not feel comfortable encouraging physical activities in people with lung cancer due to concerns about the safety and feasibility in exercise in people with lung cancer (15). However, PR is safe and effective in people with chronic pulmonary conditions, with well-established pathways and programs for these people.

As stated above, LCS have persistent fatigue and difficulty breathing, which is often worse in people who have metastatic LC. There is limited, high-quality evidence supporting interventions designed specifically for LCS with advanced disease. PR is potentially a safe and available intervention to improve functional status in LCS with early stage disease, and more research is needed to understand its impact on LCS with metastatic NSCLC treated with modern therapies.

Inclusion criteria

• Participants must have histologically confirmed NSCLC, Stages III or IV treated with palliative intent
• Adults ≥ 18 years of age
• ECOG performance status ≤ 3
• Clinical stability: defined as no clinical/radiographic progression within the last three months
• Self-reported dyspnea, defined as score ≥ 2 on the modified Medical Research Council (mMRC) Dyspnea Scale
• Participants must be fluent in written and spoken English

Exclusion criteria

• Participants being treated with curative intent for locally advanced NSCLC or oligometastatic NSCLC with concurrent chemotherapy and radiation will be excluded
• Participants have evidence of clinical and/or radiographic progression
• Mental impairment leading to inability to complete study requirements
• High risk of fracture or spine instability (Mirels score ≥7 or SINS ≥7)
• Any of the following cardiac exclusion criteria:

• Class II, III or IV heart failure as defined by the New York Heart Association (NYHA) functional classification system
• History of acute coronary syndromes (including myocardial infarction and unstable angina), coronary angioplasty or stenting within the past 6 months prior to the start of radiation therapy
• Uncontrolled arrhythmias; individuals with rate-controlled atrial fibrillation for > 1 month prior to start of radiation therapy may be eligible
• Syncope
• Acute myocarditis, pericarditis, or endocarditis
• Acute pulmonary embolus or pulmonary infarction within the last 3 months
• Acute thrombosis of lower extremities within the last 3 months
• Suspected dissecting aneurysm
• Pulmonary edema
• Respiratory failure
• Acute non-cardiopulmonary disorder that may affect exercise performance or be aggravated by exercise