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PARIS – according to a small case series of patients presented as a late-breaking study at the annual congress of the European Respiratory Society.
“The message is that it is important to think of all of the etiologies and treatable traits in patients with bronchiectasis, and do not forget eosinophilia, because this can be treated,” reported Jessica Rademacher, MD, of the Clinic for Pulmonology at Hannover (Germany) Medical School.
Mepolizumab is a monoclonal antibody that targets interleukin-5, an important signaling protein for eosinophil recruitment, and is approved for use in asthma with eosinophilia. Larger, controlled trials are needed to confirm its efficacy in bronchiectasis, but the clinical improvements after 6 months of treatment in a series of 12 patients at Dr. Rademacher’s center were impressive.
Bronchiectasis patients were selected for treatment with mepolizumab if they had been poorly controlled on conventional therapies and they had an eosinophil count of greater than 300 cells/mm3. Of 328 patients with bronchiectasis that are being followed at Dr. Rademacher’s center, 7% met these criteria. Dr. Rademacher presented data on 12 who had been followed for at least 6 months.
In these patients, the median eosinophil count fell from a median baseline of 1,000 cells/mm3 to 100 cells/mm3 at 6 months (P = .0012). The median annualized rate of exacerbations fell from three per year to one per year, and the median Modified Medical Research Council Dyspnea Scale score fell from 2 to 0 (P = .004).
“There was a steroid-sparing effect in all seven patients who were taking oral corticosteroids at baseline. Five stopped oral steroids completely,” Dr. Rademacher reported.
A visual analog scale ranging from 1 to 10 with higher scores representing improvement showed patient-rated quality of life improved from 4 to 6.5 (P = .01). Dr. Rademacher emphasized this outcome because “improved quality of life is really what we are trying to achieve.”
Mepolizumab was well tolerated. In one patient who developed pneumonia, mepolizumab was discontinued, but it was restarted when the infection resolved, because the pneumonia was not considered mepolizumab related.
Although Dr. Rademacher acknowledged the possibility that at least some of the patients in this case series had overlapping asthma, she emphasized that they were selected from a referral population that had a comprehensive workup and that this overlap has been rarely reported.
There is evidence that anti–interleukin-5 therapies such as mepolizumab are effective in respiratory diseases when eosinophilia is present, according to Dr. Rademacher. For example, she cited reports of clinical improvement in chronic obstructive pulmonary disease and granulomatosis with polyangiitis patients with high eosinophil counts. In bronchiectasis, which has many causes, it may be particularly important to select relevant targets.
“There is an important variability in the presentation of bronchiectasis. Not all these patients have reduced lung function,” she said. Rather, the most significant symptoms for a patient may be sputum or cough. She suggested that the goals are to identify underlying causes of symptoms and which may be treatable.
According to these data, eosinophilia may be one of the treatable causes in a small but significant proportion of patients with bronchiectasis. A trial of mepolizumab may be reasonable in patients inadequately controlled on inhaled anti-inflammatory drugs. “If they do not profit from this therapy, then stop,” she added.
Dr. Rademacher acknowledged that data from this small case series are “not enough to say that [mepolizumab] is an option for these patients,” but she believes the consistency of benefit in this small series will encourage the trials needed to confirm that this approach is safe and effective.
Dr. Rademacher reported no disclosures relevant to the report.
PARIS – according to a small case series of patients presented as a late-breaking study at the annual congress of the European Respiratory Society.
“The message is that it is important to think of all of the etiologies and treatable traits in patients with bronchiectasis, and do not forget eosinophilia, because this can be treated,” reported Jessica Rademacher, MD, of the Clinic for Pulmonology at Hannover (Germany) Medical School.
Mepolizumab is a monoclonal antibody that targets interleukin-5, an important signaling protein for eosinophil recruitment, and is approved for use in asthma with eosinophilia. Larger, controlled trials are needed to confirm its efficacy in bronchiectasis, but the clinical improvements after 6 months of treatment in a series of 12 patients at Dr. Rademacher’s center were impressive.
Bronchiectasis patients were selected for treatment with mepolizumab if they had been poorly controlled on conventional therapies and they had an eosinophil count of greater than 300 cells/mm3. Of 328 patients with bronchiectasis that are being followed at Dr. Rademacher’s center, 7% met these criteria. Dr. Rademacher presented data on 12 who had been followed for at least 6 months.
In these patients, the median eosinophil count fell from a median baseline of 1,000 cells/mm3 to 100 cells/mm3 at 6 months (P = .0012). The median annualized rate of exacerbations fell from three per year to one per year, and the median Modified Medical Research Council Dyspnea Scale score fell from 2 to 0 (P = .004).
“There was a steroid-sparing effect in all seven patients who were taking oral corticosteroids at baseline. Five stopped oral steroids completely,” Dr. Rademacher reported.
A visual analog scale ranging from 1 to 10 with higher scores representing improvement showed patient-rated quality of life improved from 4 to 6.5 (P = .01). Dr. Rademacher emphasized this outcome because “improved quality of life is really what we are trying to achieve.”
Mepolizumab was well tolerated. In one patient who developed pneumonia, mepolizumab was discontinued, but it was restarted when the infection resolved, because the pneumonia was not considered mepolizumab related.
Although Dr. Rademacher acknowledged the possibility that at least some of the patients in this case series had overlapping asthma, she emphasized that they were selected from a referral population that had a comprehensive workup and that this overlap has been rarely reported.
There is evidence that anti–interleukin-5 therapies such as mepolizumab are effective in respiratory diseases when eosinophilia is present, according to Dr. Rademacher. For example, she cited reports of clinical improvement in chronic obstructive pulmonary disease and granulomatosis with polyangiitis patients with high eosinophil counts. In bronchiectasis, which has many causes, it may be particularly important to select relevant targets.
“There is an important variability in the presentation of bronchiectasis. Not all these patients have reduced lung function,” she said. Rather, the most significant symptoms for a patient may be sputum or cough. She suggested that the goals are to identify underlying causes of symptoms and which may be treatable.
According to these data, eosinophilia may be one of the treatable causes in a small but significant proportion of patients with bronchiectasis. A trial of mepolizumab may be reasonable in patients inadequately controlled on inhaled anti-inflammatory drugs. “If they do not profit from this therapy, then stop,” she added.
Dr. Rademacher acknowledged that data from this small case series are “not enough to say that [mepolizumab] is an option for these patients,” but she believes the consistency of benefit in this small series will encourage the trials needed to confirm that this approach is safe and effective.
Dr. Rademacher reported no disclosures relevant to the report.
PARIS – according to a small case series of patients presented as a late-breaking study at the annual congress of the European Respiratory Society.
“The message is that it is important to think of all of the etiologies and treatable traits in patients with bronchiectasis, and do not forget eosinophilia, because this can be treated,” reported Jessica Rademacher, MD, of the Clinic for Pulmonology at Hannover (Germany) Medical School.
Mepolizumab is a monoclonal antibody that targets interleukin-5, an important signaling protein for eosinophil recruitment, and is approved for use in asthma with eosinophilia. Larger, controlled trials are needed to confirm its efficacy in bronchiectasis, but the clinical improvements after 6 months of treatment in a series of 12 patients at Dr. Rademacher’s center were impressive.
Bronchiectasis patients were selected for treatment with mepolizumab if they had been poorly controlled on conventional therapies and they had an eosinophil count of greater than 300 cells/mm3. Of 328 patients with bronchiectasis that are being followed at Dr. Rademacher’s center, 7% met these criteria. Dr. Rademacher presented data on 12 who had been followed for at least 6 months.
In these patients, the median eosinophil count fell from a median baseline of 1,000 cells/mm3 to 100 cells/mm3 at 6 months (P = .0012). The median annualized rate of exacerbations fell from three per year to one per year, and the median Modified Medical Research Council Dyspnea Scale score fell from 2 to 0 (P = .004).
“There was a steroid-sparing effect in all seven patients who were taking oral corticosteroids at baseline. Five stopped oral steroids completely,” Dr. Rademacher reported.
A visual analog scale ranging from 1 to 10 with higher scores representing improvement showed patient-rated quality of life improved from 4 to 6.5 (P = .01). Dr. Rademacher emphasized this outcome because “improved quality of life is really what we are trying to achieve.”
Mepolizumab was well tolerated. In one patient who developed pneumonia, mepolizumab was discontinued, but it was restarted when the infection resolved, because the pneumonia was not considered mepolizumab related.
Although Dr. Rademacher acknowledged the possibility that at least some of the patients in this case series had overlapping asthma, she emphasized that they were selected from a referral population that had a comprehensive workup and that this overlap has been rarely reported.
There is evidence that anti–interleukin-5 therapies such as mepolizumab are effective in respiratory diseases when eosinophilia is present, according to Dr. Rademacher. For example, she cited reports of clinical improvement in chronic obstructive pulmonary disease and granulomatosis with polyangiitis patients with high eosinophil counts. In bronchiectasis, which has many causes, it may be particularly important to select relevant targets.
“There is an important variability in the presentation of bronchiectasis. Not all these patients have reduced lung function,” she said. Rather, the most significant symptoms for a patient may be sputum or cough. She suggested that the goals are to identify underlying causes of symptoms and which may be treatable.
According to these data, eosinophilia may be one of the treatable causes in a small but significant proportion of patients with bronchiectasis. A trial of mepolizumab may be reasonable in patients inadequately controlled on inhaled anti-inflammatory drugs. “If they do not profit from this therapy, then stop,” she added.
Dr. Rademacher acknowledged that data from this small case series are “not enough to say that [mepolizumab] is an option for these patients,” but she believes the consistency of benefit in this small series will encourage the trials needed to confirm that this approach is safe and effective.
Dr. Rademacher reported no disclosures relevant to the report.
REPORTING FROM THE Ers congress 2018
Key clinical point: Although tested in a small case series, mepolizumab was highly effective for bronchiectasis presenting with eosinophilia.
Major finding: At 6 months, the median Modified Medical Research Council Dyspnea Scale score decreased from 2 at baseline to 0 (P = .004).
Study details: A case series of 12 patients from a single center.
Disclosures: Dr. Rademacher reported no financial relationships relevant to this report.