Comparison of different guidelines for oral cancer.

BACKGROUND: Guidelines should provide accessible and reliable information for decision-making. Also, they should be translatable to multiple settings, allowing their use in diverse situations. METHODS: We searched in GOOGLE, PUBMED, SCIELO, and SCOPUS for guidelines on oral squamous cell carcinoma. They were evaluated using the AGREE II protocol. RESULTS: We identified 16 guidelines that fulfilled inclusion criteria. The mean score and range for each AGREE II domain were: "scope and purpose" 74.1% (6-100.0%); "stakeholder" 78.6% (0-100.0%); "rigor of development" 71.4% (0-100.0%); "clarity of presentation" 71.4% (6-100.0%); "applicability" 50.0% (0-85.7%); "editorial independence" 57.1% (14.3-85.7%) and "overall assessment" 57.1% (14.3-100.0%). CONCLUSION: Guidelines for oral cancer present variable quality. Among those available, only four surpassed the 70% AGREE II score threshold.

Body mass index and prognosis in patients with head and neck cancer.

BACKGROUND: Body mass index (BMI) has been associated variably with head and neck cancer outcomes. We evaluated the association between BMI at either diagnosis or at early adulthood head and neck cancer outcomes. METHODS: Patients with invasive head and neck squamous cell cancer at Princess Margaret Cancer Centre in Toronto, Canada, were surveyed on tobacco and alcohol exposure, performance status, comorbidities, and BMI at diagnosis. A subset also had data collected for BMI at early adulthood. RESULTS: With a median follow-up of 2.5 years, in 1279 analyzed patients, being overweight (hazard ratio [HR], 0.55; 95% confidence interval [CI], 0.4-0.8; p = .001) at diagnosis was associated with improved survival when compared with individuals with normal weight. In contrast, underweight patients at diagnosis were associated with a worse outcome (HR, 1.89; 95% CI, 1.2-3.1; p < .01). CONCLUSION: Being underweight at diagnosis was an independent, adverse prognostic factor, whereas being overweight conferred better prognosis. BMI in early adulthood was not associated strongly with head and neck cancer outcomes. © 2017 Wiley Periodicals, Inc. Head Neck 39: 1226-1233, 2017.

Evolution of pancreatic function during the first year in infants with cystic fibrosis.

OBJECTIVE: To describe pancreatic function during the first year of life in infants diagnosed with cystic fibrosis (CF) using serial fecal elastase measurements. STUDY DESIGN: This was a longitudinal study of 82 infants diagnosed with CF through newborn screening. Monthly stool samples were sent to a central laboratory for fecal elastase measurements. RESULTS: A total of 61 infants had an initial stool sample obtained at age <3.5 months and a final stool sample obtained at age >9 months. Twenty-six of 29 infants with a fecal elastase value <50 µg/g at study entry had a fecal elastase value <200 µg/g (the accepted cutoff value for pancreatic insufficiency) on all measurements during the year; all 29 had a value <200 µg/g at the end of the study. Of the 48 infants with initial fecal elastase value <200 µg/g, 13 had at least 1 fecal elastase value >200 µg/g but had a final stool fecal elastase value <200 µg/g; however, 4 infants with an initial fecal elastase value <200 µg/g ended the year with a value >200 µg/g. Eleven of 13 infants with an initial fecal elastase value of >200 µg/g still had a value >200 µg/g at the end of the first year. CONCLUSION: Infants with CF exhibit variability in fecal elastase values during the first year. Infants with a fecal elastase level of 50-200 µg/g at diagnosis should be treated with pancreatic enzyme replacement therapy, but fecal elastase should be remeasured at age 1 year to ensure that those with a falsely low value do not continue to receive pancreatic enzyme replacement therapy unnecessarily. Those with a fecal elastase value >200 µg/g initially can become pancreatic insufficient with time.

Prognostic significance of p16INK4A and human papillomavirus in patients with oropharyngeal cancer treated on TROG 02.02 phase III trial.

PURPOSE: To determine the prognostic importance of p16 and human papillomavirus (HPV) in patients with oropharyngeal cancer treated on a phase III concurrent chemoradiotherapy trial. PATIENTS AND METHODS: Patients with stage III or IV head and neck squamous cell cancer were randomly assigned to concurrent radiotherapy and cisplatin with or without tirapazamine. In this substudy, analyses were restricted to patients with oropharyngeal cancer. p16 was detected by immunohistochemistry, and HPV was detected by in situ hybridization and polymerase chain reaction. RESULTS: Slides were available for p16 assay in 206 of 465 patients, of which 185 were eligible, and p16 and HPV were evaluable in 172 patients. One hundred six (57%) of 185 were p16-positive, and in patients evaluable for both p16 and HPV, 88 (86%) of 102 p16-positive patients were also HPV-positive. Patients who were p16-positive had lower T and higher N categories and better Eastern Cooperative Oncology Group (ECOG) performance status. p16-positive tumors compared with p16-negative tumors were associated with better 2-year overall survival (91% v 74%; hazard ratio [HR], 0.36; 95% CI, 0.17 to 0.74; P = .004) and failure-free survival (87% v 72%; HR, 0.39; 95% CI, 0.20 to 0.74; P = .003). p16 was a significant prognostic factor on multivariable analysis (HR, 0.45; 95% CI, 0.21 to 0.96; P = .04). p16-positive patients had lower rates of locoregional failure and deaths due to other causes. There was a trend favoring the tirapazamine arm for improved locoregional control in p16-negative patients (HR, 0.33; 95% CI, 0.09 to 1.24; P = .13). CONCLUSION: HPV-associated oropharyngeal cancer is a distinct entity with a favorable prognosis compared with HPV-negative oropharyngeal cancer when treated with cisplatin-based chemoradiotherapy.

Sweat testing infants detected by cystic fibrosis newborn screening.

OBJECTIVE: Describe and define limitations of early pilocarpine iontophoresis (sweat testing) for cystic fibrosis (CF) newborn screening (NBS). STUDY DESIGN: Population-based results from follow-up of CF NBS-positive newborns. RESULTS: Insufficient quantity of sweat is more likely if the sweat test is done too early, but testing is generally successful after 2 weeks of age. Sweat chloride levels drop over the first weeks of life. CF carriers have higher sweat chloride concentrations than non-carriers. CONCLUSIONS: Sweat testing can be performed effectively after 2 weeks of age for CF NBS-positive newborns. Earlier testing has a higher risk of insufficient sweat for completing testing.

Challenges in implementing a successful newborn cystic fibrosis screening program.

OBJECTIVE: To identify necessary components of a successful cystic fibrosis (CF) newborn screening (NBS) program. STUDY DESIGN: The approach to CF NBS used by the Massachusetts NBS program was examined. RESULTS: Several key components were identified that should be addressed when a state has made the decision to screen, and well in advance of actual implementation. These components include (1) inclusion of CF center directors in the development process; (2) logistics of choosing a screening algorithm relative to practices in place and community wishes; (3) projections of medical service needs from specific algorithms; (4) identification of critical reporting components; (5) identification of critical follow-up components; and (6) recognition of educational needs. CONCLUSIONS: Careful examination of a wide variety of issues is needed to ensure optimal implementation of NBS for CF.

Communications systems and their models: Massachusetts parent compliance with recommended specialty care after positive cystic fibrosis newborn screening result.

OBJECTIVE: To evaluate compliance with recommendations for sweat testing/specialty evaluation and genetic counseling after a positive cystic fibrosis newborn screening (CF NBS) result. STUDY DESIGN: All infants with positive CF NBS results require a diagnostic sweat test at a CF center. Results that were "screen positive and diagnosis negative" prompted family genetic counseling. Parent compliance with follow-up protocol recommendations was retrospectively analyzed relative to the communications model in place at a particular CF Center. RESULTS: At each of the 5 MA CF centers, 95% of the CF NBS-positive infants completed recommended sweat testing. In contrast, there was wide disparity in compliance (32%-90%) with completion of genetic counseling between CF centers. CONCLUSION: CF centers that escorted parents through the 2 recommended follow-up steps in 1 day had higher compliance with the second step (genetic counseling) than centers that required a return visit for genetic counseling.