Hematologic Oncology

A mutation of the PAX5 gene has been found to play an important role in inherited cases of B-cell precursor acute lymphoblastic leukemia (B-ALL). The mutation was isolated in two unrelated families with high propensity for B-ALL.

Gilead Sciences has submitted an NDA to the FDA for its new drug idelalisib, for the use in patients with indolent non-Hodgkin lymphoma that is refractory to rituximab and chemotherapy.

Pomalidomide, an immunomodulatory drug, combined with low-dose dexamethasone improved progression-free survival in patients with refractory or relapsed and refractory multiple myeloma compared with standard of care high-dose dexamethasone, according to a new study.

Evidence continues to mount that discontinuing imatinib treatment for chronic myeloid leukemia (CML) in the chronic phase is safe. A new phase II Dutch and Belgian study showed only about two-thirds of patients relapsed after discontinuing treatment with imatinib and cytarabine, and all patients remained sensitive to imatinib after relapse.

MZL comprises three different entities that require integration of clinical and pathologic features to make a diagnosis. Treatment is chosen and initiated on the basis of presentation, symptoms, and underlying subtype.

The number of recently approved agents and those under investigation is promising. However, there are currently no recommendations regarding the optimal timing for use of these agents, a reflection of the lack of data in this area and the need for prospective studies.

This is an exciting time in the treatment of PTCL, but with this opportunity comes responsibility. The challenge of how to optimize a plethora of promising new therapies for a small number of patients will drive therapeutic decision making for the foreseeable future.

To define the differences between the subtypes of myeloma patients, not only prospective collection of clinical and laboratory data are needed, but also cytogenetics and molecular profiling.

Myelomas that “lack” a monoclonal protein can be divided further into those that produce some protein and yet do not secrete it or whose serum concentration is so low that it cannot be measured, and those that truly produce no monoclonal protein at all.

In this article we briefly review the labeled indications for new agents for cutaneous and peripheral T-cell lymphoma, focus on data from the last 1 to 2 years, and on data from ongoing clinical trials, with the hope that in doing so we can help elucidate difficult treatment decisions.

Numerous small series of patients suggest that the prognosis for non-secretory myeloma patients is likely no worse than the prognosis for patients with traditional secretory myeloma, and in some settings may be superior.

A phase I study of dasatinib in children and adolescents with chronic myeloid leukemia (CML) and other malignancies determined dosing for further studies and suggested the drug is well tolerated and effective in these patients.

Patients with multiple myeloma who underwent autologous stem cell transplantation may have a continued response to the treatment even after the traditional disease assessment at 100 days. A new study indicates that this continued response maintained prognostic value and should be taken into account when considering post-transplant therapies.

Maintenance therapy with rituximab showed some improvement over observation, though it did not reach significance, among older patients with advanced follicular lymphoma who responded to a brief chemoimmunotherapy induction regimen followed by rituximab consolidation therapy.

A phase I study showed that azacitidine priming followed by standard chemotherapy could be an effective approach to resistance in patients with newly diagnosed diffuse large B-cell lymphoma (DLBCL).

Researchers in London have identified a number of new genetic variants that are linked to myeloma, and one specifically linked to a telomerase RNA component gene called TERC, that helps to control the aging process by acting as a cell’s internal clock.

The real promise of improving patient outcomes in IgD and IgE multiple myeloma lies in multi-drug combinations, next-generation agents, and immunotherapy.

The use of newer methods of disease assessment that focus on minimal residual disease may facilitate the long-term evaluation of IgD and IgE myeloma patients, even if the rare Ig subtype is not identified at diagnosis.

How often do we choose the “second best” treatment as initial therapy for our patients with cancer? The management of chronic myeloid leukemia should be no different.

I am very comfortable in using imatinib as initial therapy in most patients who present in chronic phase, with the possible exception of patients with more advanced disease and higher Sokal scores.

In a new series, beginning this month and running into early 2014, experts on five “unusual dysproteinemias” will share their insights into diagnosis and management.

Although survival of patients with IgD or IgE multiple myeloma is shorter in comparison to those with IgG or IgA multiple myeloma, the outcome for patients with IgD and IgE subtypes is improving with the use of novel agents and autologous transplantation.

The present guidelines review epidemiology, pathology, presentation, workup, staging, prognostic factors, and treatment options for patients with localized nodal indolent lymphoma, with an emphasis on radiation guidelines, including radiation dose, field design, and radiation techniques.

Early treatment with lenalidomide and dexamethasone in patients with high-risk smoldering myeloma significantly delayed progression to symptomatic disease and prolonged survival with a good safety profile.

A study from the Mayo Clinic/University of Iowa assessing the use of surveillance CT scans to detect DLBCL relapses found that the majority of relapses occurred outside of regularly scheduled visits and concluded that it is important to educate patients to be more alert to signs and symptoms of relapse.

Dr. Brian Link discusses challenges in managing very elderly patients with diffuse large B-cell lymphoma and looks ahead to future management of DLBCL in general.

Dr. Brian Link discusses clinical implications of the large Mayo Clinic/ University of Iowa study (ASCO abstract 8504) showing patient symptoms rather than scheduled surveillance imaging drove detection of relapses in patients with diffuse large B-cell lymphoma (DLBCL).

In this interview, we discuss the current state of therapies available in treating CML patients and the role of newer agents.

The phase II portion of the GAUGUIN study found promising activity with the anti-CD20 antibody obinutuzumab in patients with relapsed or refractory indolent NHL.

Older multiple myeloma patients exposed to novel agents prior to autologous peripheral blood stem cell transplantation were at increased risk for engraftment syndrome.