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Bilateral acoustic hearing in cochlear implant (CI) recipients with hearing preservation may allow access to binaural cues. Sensitivity to acoustic binaural cues has been shown in some listeners combining electric and acoustic stimulation (EAS), yet remains poorly understood and may be subject to limitations imposed by the electrical stimulation and/or amplification asymmetries. The purpose of this study was to investigate the effect of stimulus level, frequency-dependent gain, and the addition of unilateral electrical stimulation on sensitivity to low-frequency binaural cues. Thresholds were measured for interaural time and level differences (ITD and ILD) carried by a low-frequency, bandpass noise (100-800 Hz). 16 adult CI EAS listeners (mean age = 50.2 years) each participated in three listening conditions acoustic hearing only at 90 dB SPL, acoustic hearing only at 60 dB SPL with frequency-dependent gain, and acoustic hearing plus unilateral CI at 60 dB SPL with frequency-dependent gain applied to the acoun combined with bilateral acoustic stimulation may reduce interference effects, perhaps because listeners adapt to the presence of the constant but binaurally incongruous CI stimulus. These results are consistent with past studies that demonstrated no interference in spatial hearing tasks due to the addition of a unilateral CI in adult EAS listeners. V.OBJECTIVES There is currently no effective salvage therapeutic modality that improves the survival outcomes of patients with recurrent or metastatic nasopharyngeal carcinoma. However, the programmed cell death protein 1 (PD-1) and its ligand (PD-L1) inhibitors may provide clinical benefit for these advanced patients. MATERIALS AND METHODS The databases, including PubMed, Web of Science, EMBASE and Cochrane Library, were systematically searched up to Nov 5, 2019. Data of objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS) rate, overall survival (OS) rate, and drug-related adverse events were extracted and pooled meta-analyzed. RESULTS From 71 search records, eight studies were included in the systematic review, of which three were eligible for final meta-analysis. In recurrent or metastatic nasopharyngeal carcinoma patients treated with anti-PD-1 therapy, the pooled ORR was 27% (95% confidence interval [CI] 19-36%), DCR was 63% (95% CI 50-75%), 6 months PFS rate was 49% (95% CI 40-58%), 1-year PFS rate was 25% (95% CI 19-32%), 1-year OS rate was 61% (95% CI 49-72%). The pooled incidences of any grade and grade ≥ 3 drug-related adverse events were 94% and 20% respectively. CONCLUSION We present the aggregate response rates, survival rates and incidences of drug-related adverse events for recurrent or metastatic nasopharyngeal carcinoma patients receiving PD-1/PD-L1 blockage treatment, which could provide useful information for future design of clinical studies. There is a need for more randomized controlled studies with head-to-head comparison of PD-1/PD-L1 inhibitors and traditional chemotherapeutic strategies to enable better recommendations for optimal advanced nasopharyngeal carcinoma treatment. BACKGROUND The prognostic significance of circulating tumor cells (CTCs) in patients with head and neck squamous cell carcinoma (HNSCC) is still unclear. The objective of this study was to estimate its correlation with clinicopathological and prognostic significance in HNSCC. MATERIALS AND METHODS Two authors systematically searched the studies independently with keywords in PubMed, Web of science, Embase, the Cochrane database, the CNKI database, the Science citation index and the references of relevant studies (up to February 2019). Odds ratio (OR), risk ratio (RR), pooled hazard ratio (HR) and 95% confidence intervals (95%CI) were calculated as effect values. RESULTS Twenty studies containing 1054 patients with HNSCC were included in this meta-analysis. The CTC-positive rate was higher in the T3-T4 group (RR = 1.29, 95% CI [1.11, 1.49], I2 = 47.3%), the N1-N3 group (RR = 1.18, 95% CI [1.02, 1.36], I2 = 12.4%) and the III-IV group (RR = 1.13, 95% CI [1.02, 1.25], I2 = 0%). https://www.selleckchem.com/products/h-1152-dihydrochloride.html Positive CTCs were significant associated with overall survival (HR = 1.37, 95% CI [0.59, 2.15], I2 = 9.7%), progression-free survival (HR = 3.40, 95%CI [1.47, 5.32], I2 = 0%), and disease-free survival (HR = 3.57, 95%CI [1.06, 6.08], I2 = 81%). CONCLUSION Our meta-analysis results indicated that CTCs are significant associated with prognosis of patients with HNSCC. The presence of CTCs can be used as a monitoring tool for survival prognosis of HNSCC patients in the future. OBJECTIVES Patients with prior irradiated head and neck cancer (HNC) who are ineligible for definitive retreatment have limited local palliative options. We report the largest series of the use of the Quad Shot (QS) regimen as a last-line local palliative therapy. MATERIALS AND METHODS We identified 166 patients with prior HN radiation therapy (RT) treated with QS regimen (3.7 Gy twice daily over 2 consecutive days at 4 weeks intervals per cycle, up to 4 cycles). Palliative response defined by symptom(s) relief or radiographic tumor reduction, locoregional progression free survival (LPFS), overall survival (OS) and radiation-related toxicity were assessed. RESULTS Median age was 66 years. Median follow-up for all patients was 6.0 months and 9.7 months for living patients. Overall palliative response rate was 66% and symptoms improved in 60% of all patients. Predictors of palliative response were > 2 year interval from prior RT and 3-4 QS cycles. Median LPFS was 5.1 months with 1-year LPFS 17.7%, and median OS was 6.4 months with 1-year OS 25.3%. On multivariate analysis, proton RT, KPS > 70, presence of palliative response and 3-4 QS cycles were associated with improved LPFS and improved OS. The overall Grade 3 toxicity rate was 10.8% (n = 18). No Grade 4-5 toxicities were observed. CONCLUSION Palliative QS is an effective last-line local therapy with minimal toxicity in patients with previously irradiated HNC. The administration of 3-4 QS cycles predicts palliative response, improved PFS, and improved OS. KPS > 70 and proton therapy are associated with survival improvements.
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