scholarly journals P5‐3: Efficacy and safety of first‐line therapy for pulmonary nocardiosis; trimethoprim/sulfamethoxazole versus alternative antibiotics

Respirology ◽  
2021 ◽  
Vol 26 (S3) ◽  
pp. 155-156
2019 ◽  
Vol 14 (1) ◽  
pp. 14-19 ◽  
Author(s):  
K. A. Belousov ◽  
T. A. Mitina ◽  
Yu. Yu. Chuksina ◽  
A. K. Golenkov ◽  
E. V. Kataeva ◽  
...  

Objective: to study the efficacy and safety of the antitumor RVP program (lenalidomide, bortezomib, prednisone) as a first-line therapy in patients with multiple myeloma (MM). Materials and methods. A prospective study involved 39 patients with MM (15 women, 24 men), median age 61 years (30–76 years). All patients had Durie–Salmon stage III disease. According to the paraprotein isotype variant, 19 patients (48.7 %) had Gk myeloma, 8 (20.5 %) had Gλ, 4 (10.2 %) – Ak, 1 – Aλ, 1 – Dk, 1 – paraproteinemia Bens-Jones k and 1 – Bens-Jones λ, 2 – Dλ, and 2 patients – nonsecreting MM. The average level of plasma cells in the bone marrow was 31.7 % (0.8–80.0 %). In 14 (35.8 %) patients there were plasmacytomas of various localization (spine, cranial bones, clavicle, pleura). Nine (23.0 %) patients had renal failure, requiring the start of renal replacement therapy. The average Karnovsky index in the study group was 50 %. All patients received RVP therapy (lenalidomide 25 mg in 1–14 days, bortezomib 1.3 mg subcutaneously in 1, 4, 8, 11 days, prednisolone 60 mg/m2; the interval between courses was 42 days) as the first line therapy. Evaluation of therapy efficacy, characterized by overall survival, objective response rates (the number of complete, very good partial and partial remissions) was performed after 6 treatment courses. Results. The median follow-up was 15 months; the median of overall survival was not achieved. Objective antitumor response achieved in 29 (74.3 %) patients, including complete remissions in 3 (7.6 %), very good partial remissions – in 7 (17.9 %), partial remissions – in 19 (48.7 %) patients. In 2 out of 9 patients who received renal replacement therapy, independence from dialysis therapy was achieved. Cases of III–IV stage hematological and non-hematological toxicity in the study were not noted. Conclusion. The antitumor RVP program showed high efficacy and safety as a first-line therapy in a non-selective group of patients, including those with a complicated MM course.


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 7007-7007
Author(s):  
Jessica K. Altman ◽  
Jamie Koprivnikar ◽  
James K. McCloskey ◽  
Vamsi Kota ◽  
Olga Frankfurt ◽  
...  

7007 Background: Aspacytarabine (BST-236) is a prodrug of cytarabine, the backbone of acute myeloid leukemia (AML) standard of care chemotherapy, associated with toxicity which precludes its administration in older patients and patients with comorbidities. Aspacytarabine is inactive in its intact prodrug form until cytarabine is gradually released at pharmacokinetics which decrease the systemic exposure to peak toxic cytarabine levels, resulting in reduced systemic toxicity and relative sparing of normal tissues, enabling therapy with high cytarabine doses to patients otherwise unfit to receive it. Methods: A phase 2b open-label, single-arm study to evaluate the efficacy and safety of aspacytarabine as a first-line single-agent therapy in newly-diagnosed AML patients unfit for standard chemotherapy (NCT03435848). Aspacytarabine is administrated at 4.5 g/m2/d (containing 3 g/m2/d cytarabine) in 1-2 induction and 1-3 consolidation courses, each consisting of 6 daily 1-hour infusions. Patients with secondary AML, prior hypomethylating agent (HMA) therapy, and therapy-related AML, are eligible. Results: To date, in the ongoing study, 46 newly-diagnosed AML patients unfit for standard chemotherapy (median age 75 years) were treated with aspacytarabine and completed 1-4 courses of 4.5 g/m2/d aspacytarabine, including 26 patients (63%) with de novo AML and 17 (37%) with secondary AML. Six patients (13%) were previously treated with HMA (median 12 courses). The baseline median bone marrow blasts was 52%, and 54% and 29% of patients had adverse or intermediate European LeukemiaNet (ELN) score, respectively. Twenty (43%) patients had ECOG 2. Aspacytarabine is safe and well-tolerated in repeated-course administration. Grade > 2 drug-related adverse events include mainly hematological events and infections. The 30-day mortality rate is 11%. Of 43 patients evaluable for efficacy analysis to date, 15 patients (35%) reached a complete remission (CR) following 1 (13 patients) or 2 (2 patients) induction courses, all with complete hematological recovery (median 27.5 days, range 22-39 days). The CR rates in de novo AML patients and patients with adverse ELN score are 46% and 33%, respectively. Of the 11 patients evaluable to date for minimal residual disease (MRD) flow cytometry test, 8 are MRD negative (73%). While aspacytarabine treatment consists of a limited number of courses, median duration of response and median overall survival for responders are not reached at 12 and 24 months, respectively (end of follow up). Updated results will be presented at the meeting. Conclusions: The cumulative clinical data suggest that aspacytarabine, a time-limited single-agent treatment, is safe and efficacious as a first-line therapy for patients who are unfit for intensive chemotherapy, which may establish it as a new tolerable AML chemotherapy backbone. Clinical trial information: NCT03435848.


Sign in / Sign up

Export Citation Format

Share Document