ABSTRACT
Obinutuzumab (G) has become part of front-line treatment of follicular lymphoma (FL) based on results of a large randomized study. Data on patients treated outside of clinical trials are lacking. We have retrospectively investigated efficacy and safety of G-based immunochemotherapy regimens in 114 patients treated in a real-life setting during a period of 2 years, largely coinciding with the COVID-19 pandemic. The response rate was 93.8%; 18-months overall (OS) and progression-free survival (PFS) were 88% and 84%, respectively. Patients treated with G-cyclophosphamide, vincristine and glucocorticoid + doxorubicine (CHOP) had statistically significantly superior OS and PFS compared to patients treated with G-bendamustine (G-B) (P = 0.002 and P = 0.006, respectively) due to an increase in lethal infections, most notably COVID-19, in the latter group. A total of 12 patients died during follow-up; 9 of 61 treated with G-B, 1 of 49 treated with G-CHOP and 2 of 4 treated with G-cyclophosphamide, vincristine and glucocorticoid (CVP). SARS-CoV-2 infection was diagnosed in 20 (17.5%) patients. All of the 7 treated with G-CHOP recovered, while 4 of 12 treated with G-B died. Immunoglobulin levels and severity of neutropenia were similar between the groups. In multivariate analysis, G-B in comparison to G-CHOP was an independent prognostic factor (P = 0.044, hazard ratio = 9.81) after adjustment for age, sex and Follicular Lymphoma International Prognostic Index (FLIPI). Based on our experience G has excellent antilymphoma activity in patients receiving front-line treatment for FL in real-life setting, but during the COVID-19 pandemic, it should be preferentially combined with CHOP, at least in patients younger than 65.
ABSTRACT
Acquired antibodies against factor II (prothrombin) are rare and most commonly associated with severe liver disease or vitamin K antagonist treatment. In very rare cases, these antibodies and associated hypoprothrombinemia are found in patients with lupus anticoagulant (LAC), an antiphospholipid antibody that inhibits phospholipid-dependent coagulation tests. This uncommon entity, called lupus anticoagulant-hypoprothrombinemia syndrome (LAHPS), may cause both severe, life-threatening bleeding and a predisposition to thrombosis. Coronavirus disease 2019 (COVID-19) is associated with a variety of coagulation abnormalities and an increased risk of thrombosis. Bleeding may occur, but it is less common than thromboembolism and has mostly been described in association with the severity of the disease and anticoagulation treatment in hospitalized patients, rarely in the post-acute phase of the disease. We report on a case of an 80-year-old man who developed LAHPS with prothrombin antibodies and severe bleeding after COVID-19.