Spontaneous regression of epileptogenic pilocytic astrocytoma with FGFR1-TACC1 fusion.

Introduction: Pilocytic astrocytoma (PA) is the most common pediatric tumor, typically located in the cerebellum, with spontaneous regression observed mainly in patients with neurofibromatosis type 1 (NF1). However, spontaneous regression of PA without NF1 is rarely reported.

Case Presentation: Here, we describe a case of spontaneous regression of PA without NF1, located in the left frontal lobe with FGFR1-TACC1 fusion, in a 14-year-old boy who presented with epilepsy.

Lethal co-expression intolerance underlies the mutually exclusive expression of ASCL1 and NEUROD1 in SCLC cells.

Small cell lung cancer (SCLC) subtypes, defined by the expression of lineage-specific transcription factors (TFs), are thought to be mutually exclusive, with intra-tumoral heterogeneities. This study investigated the mechanism underlying this phenomenon with the aim of identifying a novel vulnerability of SCLC. We profiled the expression status of ASCL1, NEUROD1, POU2F3, and YAP1 in 151 surgically obtained human SCLC samples.

Long-term clinical significance of the presence of puff-chandelier ruptures detected by non-obstructive aortic angioscopy.

Although studies have reported various patterns of atherosclerotic aortic plaques (AAPs) detected by non-obstructive aortic angioscopy (NOA), the long-term outcomes associated with AAPs such as puff-chandelier rupture atheromatous plaque (PCR), remain unclear. This study investigated the long-term prognostic significance of AAPs detected by NOA in patients who underwent percutaneous coronary intervention (PCI). This retrospective multicenter cohort study included 167 patients who underwent PCI and NOA.

Postmortem distribution of etizolam in various autopsy samples using the surrogate analyte approach (SAA) method.

Etizolam, a type of anxiolytic drug, is the most commonly abused drug among hypnotic/anxiolytic medications in Japan. Although there have been reports on the postmortem identification of etizolam in the blood, the detailed distribution of etizolam among organs in an abuse case has not been reported. In this study, we examined etizolam concentrations in the blood and organs obtained from etizolam-related autopsy cases using the surrogate analyte approach (SAA) method, which can be analytically used without blank samples.