Adjuvant therapy provides no additional recurrence-free benefit for esophageal squamous cell carcinoma patients after neoadjuvant chemoimmunotherapy and surgery: a multi-center propensity score match study.

Purpose: The need for adjuvant therapy (AT) following neoadjuvant chemoimmunotherapy (nICT) and surgery in esophageal squamous cell cancer (ESCC) remains uncertain. This study aims to investigate whether AT offers additional benefits in terms of recurrence-free survival (RFS) for ESCC patients after nICT and surgery.

Methods: Retrospective analysis was conducted between January 2019 and December 2022 from three centers.

β-C-H Allylation of Trialkylamines with Allenes Promoted by Synergistic Borane/Palladium Catalysis.

Functionalization of the C(sp )-H bonds of trialkylamines is challenging, especially for reactions at positions other than the α position. Herein, we report a method for β-C(sp )-H allylation of trialkylamines. In these reactions, which involve synergistic borane/palladium catalysis, an enamine intermediate is first generated from the amine via α,β-dehydrogenation promoted by B(C F ) and a base, and then the enamine undergoes palladium-catalyzed reaction with an allene to give the allylation product.

[miR-129 in the diagnosis, treatment and prediction of clinical prognosis of prostate cancer].

Objective: To explore the value of miR-129 in the diagnosis, treatment and prediction of the clinical prognosis of PCa by observing the correlation between miR-129 and the progression of the malignancy.

Methods: This retrospective analysis included 310 male patients who visited the Department of Urology of the General Hospital of Eastern Theater Command from January 2014 to January 2022, 80 as normal healthy men, 80 with BPH, and the other 150 with PCa treated by radical prostatectomy without chemotherapy, radiotherapy or androgen-deprivation therapy. We determined the miR-129 expression in the serum and prostatic tissue of all the subjects by real-time quantitative PCR (RT-qPCR), performed pathological grading of the primary cancerous and pericancerous (≥ 3 cm from the focus) prostate tissues from the 150 PCa patients, collected the demographic and clinical data on all the subjects, and analyzed the correlation of their demographic data with the clinical parameters.

C3-Cyanation of Pyridines: Constraints on Electrophiles and Determinants of Regioselectivity.

Methods for C-H cyanation of pyridines are rare. Here, we report a method for C3-selective cyanation of pyridines by a tandem process with the reaction of an in situ generated dihydropyridine with a cyano electrophile as the key step. The method is suitable for late-stage functionalization of pyridine drugs.