0000000000054724
AUTHOR
Iván ÁLvarez-twose
showing 3 related works from this author
Spanish Society of Hematology and Hemotherapy expert consensus opinion for SARS-CoV-2 vaccination in onco-hematological patients.
2021
Abstract In the midst of the COVID-19 pandemic, different vaccines in front of SARS-CoV-2 have been approved and administered in different vulnerable populations. As patients with cancer were excluded from pivotal trials of vaccination, little is known on their immunogenic response to these vaccines, particularly in patients with severely impaired immune system. In response to that uncertainty, the Spanish Society of Hematology and Hemotherapy launched an initiative aimed to provide recommendations for vaccination of the main hematological conditions. This document is based on the available information on COVID-19 outcomes, prior knowledge on vaccination in hematological patients, recent pu…
Pioneer: A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study of Avapritinib in Patients with Indolent or Smoldering Systemic Mastocytosis w…
2019
Background: The gain-of function mutation KIT D816V plays a central role in the pathogenesis of systemic mastocytosis (SM). Among subtypes of SM, indolent SM (ISM) is the most frequent and is associated with normal/near-normal life expectancy; smoldering SM (SSM) is a subtype with a relatively higher burden of mast cells and may be associated with an increased risk of progression to advanced mastocytosis. However, both ISM and SSM patients may experience severe symptoms associated with mast cell mediator release, such as pruritus, diarrhea, anaphylaxis, and bone pain, which can be severely debilitating and have a profoundly negative impact on quality of life. Symptomatic treatments (eg, ant…
Genome-wide association study identifies novel susceptibility loci for KIT D816V positive mastocytosis
2021
Mastocytosis is a rare myeloid neoplasm characterized by uncontrolled expansion of mast cells, driven in >80% of affected individuals by acquisition of the KIT D816V mutation. To explore the hypothesis that inherited variation predisposes to mastocytosis, we performed a two-stage genome-wide association study, analyzing 1,035 individuals with KIT D816V positive disease and 17,960 healthy control individuals from five European populations. After quality control, we tested 592,007 SNPs at stage 1 and 75 SNPs at stage 2 for association by using logistic regression and performed a fixed effects meta-analysis to combine evidence across the two stages. From the meta-analysis, we identified three …