Retreatment May Be Necessary
In an accompanying editorial, Loren Laine, MD, chief of the section of digestive diseases, internal medicine, and medical chief, digestive health, Yale School of Medicine, New Haven, Connecticut, affirmed the authors’ conclusions and commended the quality of evidence they provided.
“Their results suggest that thalidomide may be disease-modifying, with efficacy persisting after discontinuation,” wrote Dr. Laine, also a Yale professor of medicine and digestive diseases.
While thalidomide effectively prevented rebleeding for 42 patients during the year after therapy was stopped, suggesting an alteration of angiodysplasias, rebleeding during the subsequent 3-27 months occurred among 20 of those patients, Dr. Laine noted. That finding, “suggests that retreatment will be needed,” although the appropriate duration of treatment before retreatment and the duration of retreatment remain unclear, he added.
The study’s reliance on bleeding episodes that were defined by positive fecal occult blood tests, which may be clinically unimportant, is a weakness in the trial, Dr. Laine wrote.
Despite the study’s positive findings, clinicians may still prefer somatostatin analogues because of their potential for better safety and, with once-monthly injections versus daily thalidomide pills, their likelihood for better adherence, Dr. Laine wrote. “[They] will reserve thalidomide for use in patients who have continued bleeding or side effects with somatostatin analogues,” he added.
Somatostatin is rarely used in the treatment of SIA bleeding in China, where thalidomide is relatively easy to obtain and is being used clinically, Dr. Ge told this news organization in response to Dr. Laine’s editorial. “The clinical application of thalidomide has been taken up in other [Chinese] hospitals that have seen our research,” he added.
Future research may include randomized controlled trials of somatostatin, since Chinese experience with it is so limited, Dr. Ge said. “We would want to compare efficacy, safety, feasibility and cost-effectiveness between somatostatin and thalidomide,” he added.
The study was supported by grants from the National Natural Science Foundation of China and a grant from the Shanghai Municipal Education Commission, Gaofeng Clinical Medicine. The author disclosures can be found with the original article.