MS-N323 · Breathing and psychological support · Breathlessness · Advanced cancer · Human evidence · Appraised 13 November 2026

Does combining breathing training with psychological support improve moderate-to-severe breathlessness in advanced cancer?

Evidence at a glance

• Evidence label: Single-center four-arm randomized trial; positive short-term results with important registration limitations
• Benefit: The combined program improved breathlessness and distress more than standard care over eight weeks.
• Certainty: Low to moderate; effect sizes were large, but the trial was unregistered, single-center and awaits independent replication.
• Risk: No dedicated adverse-event summary was located. Breathlessness can signal an emergency and should never be presumed to be anxiety alone.

What was studied

A four-arm trial enrolled 160 adults with advanced cancer and moderate-to-severe dyspnea: standard care, breathing training, psychological support or both, with 40 per group. Outcomes were assessed through eight weeks.

What the evidence found

Mean VAS breathlessness change was −0.93 with the combined program versus −0.21 with control (p<0.001; d=0.91). The reported number needed to treat for a 30% dyspnea response was 3. Anxiety, depression and quality-of-life effects also favored the combined program, but the component interaction was sub-additive rather than synergistic. Benefit was smaller in ECOG performance-status 3.

How to interpret it

The trial was not prospectively registered, which raises selective-reporting concerns. Follow-up was short, the setting was one hospital and the intervention requires replication. The reported effect does not show a survival or tumor-control benefit.

These outcomes concern symptoms, distress, sleep or supportive care. They do not establish tumor response, delayed recurrence, progression-free survival or longer overall survival.

Practical safety context

New or worsening breathlessness needs clinical assessment for pulmonary embolism, infection, pleural effusion, anemia, heart problems, airway obstruction, treatment toxicity or disease progression. Training is adjunctive only and must not delay oxygen, medication, drainage or emergency care when indicated.

Questions for the care team

• Has the cause of my breathlessness been medically assessed?
• Which breathing technique is safe with my lung function and performance status?
• What change should trigger urgent evaluation rather than continuing the exercise?

Funding and conflicts

The study reported support from Hangzhou Cancer Hospital and no commercial or financial conflicts.

Sources

• Primary trial (PMID 42846461)
• Open full text (PMCID PMC13642666)
• Publisher record and DOI 10.3389/fmed.2026.1881099

Last literature search: 13 November 2026. Record appraisal: 13 November 2026. The full report was appraised. The lack of prospective registration is retained as a material limitation. This page is educational and does not replace individualized medical advice.