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New treatment shows promise against aggressive anal cancer

In absence of standardised treatments, the findings show promise for those patients in whom the disease did not respond to initial therapy.

By: IANS | New York |
June 8, 2016 1:51:37 pm
Cancer treatment, cancer cure, cancer therapy, new cancer treatments, anal cancer, anal cancer treatment, anal cancer cure, anal cancer research, health news An antibody has been found to aid the immune system in fighting anal cancer. (Source: Thinkstock Images)

Researchers have identified a promising new antibody that can help patients with aggressive and metastatic anal cancer.

The findings of the first clinical trial for metastatic patients showed that the treatment with antibody nivolumab — one of the drugs represented among the growing arsenal of immunotherapy therapies — may help a majority of patients with squamous cell carcinoma of the anal canal (SCCA).

Metastatic SCCA — a cancer often associated with human papillomavirus (HPV) infection — is normally treated with chemotherapy. However, treatment with nivolumab freed the immune system to attack cancer by disrupting a brake that halts immune response and showed significant response in 70 per cent of patients in the study.

“Although a rare malignancy, the incidence is on the rise and has a strong association with the Human papillomavirus (HPV) virus,” said Cathy Eng, professor at University of Texas MD Anderson Cancer Centre.

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Nivolumab was found to unleash an immune system attack on cancer by blocking the activation of a protein called PD-1 on T cells, white blood cells, viruses and bacteria that have specific targets. PD-1 — turned on by a ligand called PD-L1 often found on cancer cells — acts as a brake or checkpoint to shut down activated T cells.

For the study, 39 patients were enrolled in the clinical trial, 37 of which were receiving treatment. All patients received nivolumab every two weeks.

Of the 37 patients evaluable for response based on intent to treat, two patients (5 per cent) had a complete response, seven (19 per cent) had a partial response and 17 (46 per cent) had stable disease — a control rate of 70 per cent.

“There are no standardised treatment options for metastatic anal cancer patients, so there’s truly an unmet need in those whose disease has not responded to initial therapy,” Eng noted.

The findings were presented at the American Society of Clinical Oncology’s annual meeting in Chicago.

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📣 The above article is for information purposes only and is not intended to be a substitute for professional medical advice. Always seek the guidance of your doctor or other qualified health professional for any questions you may have regarding your health or a medical condition.

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