Treatment with blinatumomab (Blincyto) led to a median overall survival of 7.7 months versus 4 months with standard chemotherapy in patients with Philadelphia chromosome-negative relapsed or refractory B-cell precursor acute lymphoblastic leukemia, according to results from the phase III TOWER study published in <em>The New England Journal of Medicine</em>.
Through its inherent implication in such major physiological systems as oxygenation, coagulation, protection against infections and tumor proliferation, hematology is a nearly boundless field for research and discovery. Indeed, hematology has been at the heart of such fundamental work as the
Background Oil and gas development emits known hematological carcinogens, such as benzene, and increasingly occurs in residential areas. We explored whether residential proximity to oil and gas development was associated with risk for hematologic cancers using a registry-based case-control study design. Methods Participants were 0–24 years old, living in rural Colorado, and diagnosed with cancer between 2001–2013. For each child in our study, we calculated inverse distance weighted (IDW) oil and gas well counts within a 16.1-kilometer radius of residence at cancer diagnosis for each year in a 10 year latency period to estimate density of oil and gas development. Logistic regression, adjusted for age, race, gender, income, and elevation was used to estimate associations across IDW well count tertiles for 87 acute lymphocytic leukemia (ALL) cases and 50 non-Hodgkin lymphoma (NHL) cases, compared to 528 controls with non-hematologic cancers. Findings Overall, ALL cases 0–24 years old were more likely to live in the highest IDW well count tertiles compared to controls, but findings differed substantially by age. For ages 5–24, ALL cases were 4.3 times as likely to live in the highest tertile, compared to controls (95% CI: 1.1 to 16), with a monotonic increase in risk across tertiles (trend p-value = 0.035). Further adjustment for year of diagnosis increased the association. No association was found between ALL for children aged 0–4 years or NHL and IDW well counts. While our study benefited from the ability to select cases and controls from the same population, use of cancer-controls, the limited number of ALL and NHL cases, and aggregation of ages into five year ranges, may have biased our associations toward the null. In addition, absence of information on O&G well activities, meteorology, and topography likely reduced temporal and spatial specificity in IDW well counts. Conclusion Because oil and gas development has potential to expose a large population to known hematologic carcinogens, further study is clearly needed to substantiate both our positive and negative findings. Future studies should incorporate information on oil and gas development activities and production levels, as well as levels of specific pollutants of interest (e.g. benzene) near homes, schools, and day care centers; provide age-specific residential histories; compare cases to controls without cancer; and address other potential confounders, and environmental stressors.
Inactivation of the tumor suppressor gene encoding the transcriptional regulator Ikaros ( IKZF1 ) is a hallmark of BCR-ABL1+ precursor B cell acute lymphoblastic leukemia (pre–B ALL). However, the mechanisms by which Ikaros functions as a tumor suppressor in pre–B ALL remain poorly understood. Here, we analyzed a mouse model of BCR-ABL1+ pre–B ALL together with a new model of inducible expression of wild-type Ikaros in IKZF1 mutant human BCR-ABL1+ pre–B ALL. We performed integrated genome-wide chromatin and expression analyses and identified Ikaros target genes in mouse and human BCR-ABL1+ pre–B ALL, revealing novel conserved gene pathways associated with Ikaros tumor suppressor function. Notably, genetic depletion of different Ikaros targets, including CTNND1 and the early hematopoietic cell surface marker CD34, resulted in reduced leukemic growth. Our results suggest that Ikaros mediates tumor suppressor function by enforcing proper developmental stage–specific expression of multiple genes through chromatin compaction at its target genes.
The Blood Typing Game was produced by Nobel Media with the aim of communicating Nobel achievements to younger audiences. The game was the 2012 winner of the Best Game at the Swedish Learning Awards and was designed for teenagers aged 14-17. The company also develops other broadcast, digital media, events and published content. Based upon research that…
Changes are underway in the field of hematologic malignancies, as the World Health Organization is publishing a revised classification of tumors of hematopoietic and lymphoid tissues—slated to be released in early 2017.
Welcome to the 22nd Congress This is the first congress EHA is organizing in Madrid and we are very excited to welcome you to Spain again. The congress center IFEMA is located conveniently between the city and Barajas airport and will be an excellen
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