8 results found
Cook L, O'dell G, Vourvou E, et al., 2022, Third primary SARS-CoV-2 mRNA vaccines enhance antibody responses in most patients with haematological malignancies, Nature Communications, ISSN: 2041-1723
SARS-CoV-2 infection, and resulting disease, COVID-19, has a high mortality amongst patients with haematological malignancies. Global vaccine rollouts have reduced hospitalisations and deaths, but vaccine efficacy in patients with haematological malignancies is known to be reduced. The UK-strategyoffered a third, mRNA-based, vaccine as an extension to the primary course in these patients. The MARCH database is a retrospective observational study of serological responses in patients with blood disorders. Here we present data on 381 patients with haematological malignancies. By comparison with healthy controls, we report suboptimal responses following two primary vaccines, with significantly enhanced responses following the third primary dose. These responses however are heterogeneous and determined by haematological malignancy sub-type and therapy. We identify a group of patients with continued sub-optimal vaccine responses who may benefit from additional doses, prophylactic extended half-life neutralising monoclonal therapies (nMAB) or prompt nMAB treatment in the event of SARS-CoV-2 infection.
Innes AJ, Mullish BH, Ghani R, et al., 2021, Fecal microbiota transplant mitigates adverse outcomes in patients colonized with multidrug-resistant organisms undergoing allogeneic hematopoietic cell transplantation, Frontiers in Cellular and Infection Microbiology, Vol: 11, Pages: 1-8, ISSN: 2235-2988
The gut microbiome can be adversely affected by chemotherapy and antibiotics prior to hematopoietic cell transplantation (HCT).This affects graft success and increases susceptibility to multidrug-resistant organism (MDRO) colonization and infection. Weperformed an initial retrospective analysis of our use of fecal microbiota transplantation (FMT) from healthy donors as therapy forMDRO-colonized patients with hematological malignancy. FMT was performed on eight MDRO-colonized patients pre-HCT (FMT-MDROgroup), and outcomes compared with 11 MDRO colonized HCT patients from the same period. At 12 months, survival wassignificantly higher in the FMT-MDRO group (70% versus 36% p = 0.044). Post-HCT, fewer FMT-MDRO patients required intensivecare (0% versus 46%, P = 0.045) or experienced fever (0.29 versus 0.11 days, P = 0.027). Intestinal MDRO decolonization occurred in25% of FMT-MDRO patients versus 11% non-FMT MDRO patients. Despite the significant difference and statistically comparablepatient/transplant characteristics, as the sample size was small, a matched-pair analysis to non-MDRO colonized control cohorts(2:1 matching) was performed. At 12 months, the MDRO group who did not have an FMT had significantly lower survival (36.4%versus 61.9% respectively, p=0.012), and higher non relapse mortality (NRM; 60.2% versus 16.7% respectively, p=0.009) than theirpaired non-colonized cohort. There was no difference in survival (70% versus 43.4%, p=0.14) or NRM (12.5% versus 31.2%respectively, p=0.24) between the FMT-MDRO group and their paired cohort. Negative outcomes, including mortality associatedwith MDRO colonization, may be ameliorated by pre-HCT FMT, despite lack of intestinal decolonization. Further work is needed toexplore the observed benefit.
Maynard S, Ros-Soto J, Chaidos A, et al., 2021, The role of ibrutinib in COVID-19 hyperinflammation: a case report, International Journal of Infectious Diseases, Vol: 105, Pages: 274-276, ISSN: 1201-9712
Continuing ibrutinib in patients with COVID-19 may be advantageous given its immunomodulatory properties and withdrawal of ibrutinib therapy may be detrimental. Further evidence is required to explore the potential therapeutic impact of BTKis and other immunomodulatory agents on the clinical course of COVID-19 as is currently being carried out in a number of clinical trials.
Pavlu J, Auner H, Szydlo RM, et al., 2017, Analysis of hematopoietic recovery after autologous transplantation as method of quality control for long-term progenitor cell cryopreservation., Bone Marrow Transplantation, Vol: 52, Pages: 1599-1601, ISSN: 1476-5365
Hematopoietic precursor cells (HPC) are able to restore hematopoiesis after high-dose chemotherapy and their cryopreservation is routinely employed prior to the autologous hematopoietic cell transplantation (AHCT). Although previous studies showed feasibility of long-term HPC storage, concerns remain about possible negative effects on their potency. To study the effects of long-term cryopreservation, we compared time to neutrophil and platelet recovery in 50 patients receiving two AHCT for multiple myeloma at least 2 years apart between 2006 and 2016, using HPC obtained from one mobilization and collection attempt before the first transplant. This product was divided into equivalent fractions allowing a minimum of 2 × 106 CD34+ cells/kg recipient’s weight. One fraction was used for the first transplant after median storage of 60 days (range, 17–165) and another fraction was used after median storage of 1448 days (range, 849–3510) at the second AHCT. Neutrophil recovery occurred at 14 days (median; range, 11–21) after the first and 13 days (10–20) after the second AHCT. Platelets recovered at a median of 16 days after both procedures. Considering other factors, such as disease status, conditioning and HPC dose, this single institution data demonstrated no reduction in the potency of HPC after long-term storage.
Claudiani S, Apperley JF, Deplano S, et al., 2016, Cognitive dysfunction after withdrawal of tyrosine kinase inhibitor therapy in chronic myeloid leukaemia, American Journal of Hematology, Vol: 91, Pages: E480-E481, ISSN: 1096-8652
Neelakantan P, Rezvani K, May P, et al., 2014, Excellent outcome after repeated changes of tyrosine kinase inhibitor therapy for chronic myeloid leukaemia in complete cytogenetic response due to minor side effects, BRITISH JOURNAL OF HAEMATOLOGY, Vol: 164, Pages: 608-610, ISSN: 0007-1048
Milojkovic D, Apperley J, 2008, State-of-the-art in the treatment of chronic myeloid leukaemia, CURRENT OPINION IN ONCOLOGY, Vol: 20, Pages: 112-121, ISSN: 1040-8746
De Melo VA, Milojkovic D, Khorashad JS, et al., 2007, Philadelphia-negative clonal haematopoiesis is a significant feature of dasatinib therapy for chronic myeloid leukaemia, Blood, Vol: 110, Pages: 3086-3087
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