Routine surveillance imaging in follicular lymphoma

https://ift.tt/2NfOu08

Features of vascular adverse events in Japanese patients with chronic myeloid leukemia treated with tyrosine kinase inhibitors: a retrospective study of the CML Cooperative Study Group database

Abstract

This study investigated the incidence rate and features of vascular adverse events (VAEs) in Japanese patients with chronic myeloid leukemia (CML) who were treated with tyrosine kinase inhibitors (TKIs). The analysis included 369 CML patients in the chronic or accelerated phases, selected from the CML Cooperative Study Group database; 25 events in 23 (6.2%) of these patients were VAEs. At the time of VAE incidence, nine patients were on treatment with imatinib, 12 with nilotinib, three with dasatinib, and one with bosutinib. VAE incidence comprised 13 cases of ischemic heart disease (IHD), eight of cerebral infarction (CI), and four of peripheral arterial occlusive disease (PAOD). IHD incidence rate in the study population was higher than that in the age-matched general population, particularly in nilotinib-treated patients, while CI incidence rate was almost equivalent. Compared with the Suita score, the SCORE chart and the Framingham score risk assessment tools detected more patients with high or very high risk of VAEs. In conclusion, incidence of IHD requires closer monitoring in nilotinib-treated patients. More detailed investigations for determining the most useful tool to predict VAE incidence and long-term analysis of therapy-related VAE cases are needed for improving safety during TKI therapy.

https://ift.tt/2zNQh9b

Profile of fibrosis-related gene transcripts and megakaryocytic changes in the bone marrow of myelodysplastic syndromes with fibrosis

Abstract

Bone marrow fibrosis (MF) in myelodysplastic syndromes (MDS) is associated with an adverse prognosis. It is likely that molecular changes similar to those in primary myelofibrosis (PMF) lead to MDS-MF, but gene expression profiling has not yet been carried out. We analysed bone marrow biopsy samples by PCR, qPCR (45 transcripts per sample), and immunohistochemistry from MDS patients with fibrosis (n = 70/119; including 19/70 MF0 > MF follow-up cases), MDS without fibrosis (n = 49/119), and 33 controls. SRSF2 and JAK2 mutations were detectable in up to 13% including 3/19 follow-up cases with evidence of clonal evolution during MF progression. MDS-MF showed increased expression of thrombospondin 1 (THBS1), TIMP metallopeptidase inhibitor 1 (TIMP1), transforming growth factor beta 1 (TGFB1), matrix metallopeptidases 2 and 14 (MMP2, MMP14), SMAD family members 3 and 4 (SMAD3, SMAD4), and miR-146b. Paralleling MF progression, a subfraction of follow-up cases showed megakaryocytic changes with increased CD42b+ pro-platelet deposition in the bone marrow. In summary, fibrosis in MDS-MF and PMF shows many molecular and morphological similarities.

https://ift.tt/2NfOo8M

Partial restoration of CD20 protein expression and rituximab sensitivity after treatment with azacitidine in CD20-negative transformed diffuse large B cell lymphoma after using rituximab

https://ift.tt/2zNQc5n

In contrast to high CD49d, low CXCR4 expression indicates the dependency of chronic lymphocytic leukemia (CLL) cells on the microenvironment

Abstract

CD49d and CXCR4 are key determinants of interactions between chronic lymphocytic leukemia (CLL) tumor cells and their microenvironment. In this study, we investigated the effect of CD49d and CXCR4 expressions on survival of CLL cells. Primary CLL cells were cultured with CD49d ligand, VCAM-1, or bone marrow stromal cells (BMSCs); then, apoptosis and immunophenotype analyses were performed. VCAM-1 treatment could not induce direct apoptosis protection or immunophenotype change on the CD49d-expressing CLL cells, but resulted in actin reorganization. The BMSC-induced apoptosis protection was independent from the presence of CD49d expression of CLL cells, but showed an inverse correlation with their CXCR4 expression level. We suppose that CD49d contributes to enhanced survival of leukemic cells by mediating migration to the protective microenvironment, not by direct prevention of apoptosis. Moreover, CLL cells with low CXCR4 expression represent a subpopulation that is more dependent on the microenvironmental stimuli for survival, and show increased "death by neglect" when separated from the supportive niche.

https://ift.tt/2NfOhKo

Conviction in the face of affliction: a case series of Jehovah’s Witnesses with myeloid malignancies

https://ift.tt/2zNxyL5

Severe anemia after trans-catheter arterial chemoembolization—an unusual presentation of hemoglobin Zurich

https://ift.tt/2NidPGQ