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Credit: NIH
Results of a large study suggest major depression is common—but largely untreated—among cancer patients in Scotland.
And 2 additional studies of Scottish patients showed that a program specifically designed for individuals with cancer can treat depression and improve quality of life more effectively than current methods of care.
These studies appear in The Lancet, The Lancet Oncology, and The Lancet Psychiatry.
In The Lancet Psychiatry, researchers recounted their analysis of data from 21,151 patients treated at cancer clinics in Scotland. The team found that major depression was substantially more common in cancer patients than in the general population.
Major depression was most common in patients with lung cancer (13%) and lowest in those with genitourinary cancer (6%). Moreover, nearly three-quarters (73%) of depressed cancer patients were not receiving treatment.
To address the problem of inadequate treatment, researchers initiated the SMaRT Oncology-2 trial. They reported the results in The Lancet.
The team evaluated a new treatment program called “Depression Care for People with Cancer” (DCPC). DCPC is delivered by specially trained cancer nurses and psychiatrists, working in collaboration with the patient’s cancer team and general practitioner, and is given as part of cancer care. It is a systematic treatment program that includes both antidepressants and psychological therapy.
The trial included 500 adults with major depression and a cancer with a good prognosis (predicted survival of more than 12 months).
Patients were randomized to receive either DCPC or “usual care,” which was provided by a patient’s general practitioner and might have included prescribing antidepressants or referring the patient to mental health services for assessment or psychological treatment.
Results showed that DCPC was more effective than usual care in reducing depression. At 6 months, 62% of patients who received DCPC responded to treatment (experiencing at least a 50% reduction in the severity of their depression), compared with 17% of those who received the usual care (P<0.0001). This benefit was sustained at 12 months.
In addition, DCPC improved anxiety, pain, fatigue, functioning, and overall quality of life (all P<0.05). The researchers also noted that the cost of providing DCPC was modest (£613 per patient).
“The huge benefit that DCPC delivers for patients with cancer and depression shows what we can achieve for patients if we take as much care with the treatment of their depression as we do with the treatment of their cancer,” said study author Michael Sharpe, MD, of the University of Oxford in the UK.
To see if patients with a poor-prognosis cancer could also benefit from DCPC, researchers initiated the SMaRT Oncology-3 trial. They reported the results in The Lancet Oncology.
The team tested a version of DCPC adapted for cancer patients with a poor prognosis. The trial included 142 patients with lung cancer and major depression.
Patients who received the modified version of DCPC had a significantly greater improvement in depression than those who received the usual care during 32 weeks of follow-up (P=0.0003). DCPC also improved patients’ anxiety (P=0.046), functioning (P=0.0019), and quality of life (P=0.018).
“Patients with lung cancer often have a poor prognosis,” said study author Jane Walker, MBChB, PhD, of the University of Oxford and Sobell House Hospice in Oxford, UK.
“If they also have major depression, that can blight the time they have left to live. This trial shows that we can effectively treat depression in patients with poor-prognosis cancers, like lung cancer, and really improve patients’ lives.”
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