Synthesis of a semimetallic Weyl ferromagnet with point Fermi surface.

Quantum materials governed by emergent topological fermions have become a cornerstone of physics. Dirac fermions in graphene form the basis for moiré quantum matter and Dirac fermions in magnetic topological insulators enabled the discovery of the quantum anomalous Hall (QAH) effect. By contrast, there are few materials whose electromagnetic response is dominated by emergent Weyl fermions.

Clinical practice pattern of Pneumocystis pneumonia prophylaxis in systemic lupus erythematosus: a cross-sectional study from lupus registry of nationwide institutions (LUNA).

Background: Pneumocystis jirovecii pneumonia (PCP) is an opportunistic infection in patients undergoing immunosuppressive therapy, such as glucocorticoid (GC) medication, for systemic autoimmune diseases like systemic lupus erythematosus (SLE). Despite the confirmed effectiveness of PCP prophylaxis, its clinical administration, especially in conjunction with GC dosage, remains unclear. We aimed to describe the clinical practice of PCP prophylaxis in association with SLE in Japan, evaluate the relationship between GC dosage and PCP prophylaxis, and explore the practice patterns associated with PCP prophylaxis.

Association between discontinuity of care and patient trust in the usual rheumatologist among patients with systemic lupus erythematosus: a cross-sectional study.

Background: Patient trust plays a central role in the patient-physician relationship. This study aimed to determine whether the number of outpatient visits with a covering rheumatologist is associated with patient trust in their usual rheumatologist.

Methods: Japanese adults with systemic lupus erythematosus (SLE) who met the 1997 revised classification criteria of the American College of Rheumatology and had outpatient visits with a covering rheumatologist in the past year were included.