Background: The duration of time from the diagnosis of acute myeloid leukemia (AML) to the initiation of chemotherapy is dependent on multiple factors. Previous studies suggest that delays in the time from diagnosis to treatment do not impact overall survival (OS) and complete remission (CR). As a result, awaiting laboratory analysis of molecular targets for therapy, specifically FLT3, has become more commonly adopted by clinicians. However, this strategy can lead to significant delays in initiation of chemotherapy. The aim of this study is to analyze the impact of delaying chemotherapy on OS and CR in AML patients. Methods: We performed a retrospective analysis on adult patients with AML who were treated with induction chemotherapy at The University of Oklahoma Health Sciences Center from January 2000 to June 2012. Time from admission to treatment (TAT) was calculated from the date of admission to the date of initiation of chemotherapy. In addition, we analyzed the admission day of the week and its association with TAT (days). Association between CR and TAT was assessed using ANOVA and Chi-Square tests. Kaplan-Meier estimates of median OS were calculated for groups defined by categorical variables. A Cox Proportional Hazards model on OS was implemented using TAT, age, risk status (favorable, intermediate and unfavorable risks), day of admission, distance to hospital, and white blood cell (WBC) count. Interaction was assessed and a backward selection procedure was used to find the covariates associated with OS. Statistical analysis was performed using SAS 9.3 software. Results: A total of 160 patients with AML received induction chemotherapy at our institution during the defined time, with 137 meeting inclusion criteria. The median age at diagnosis was 51 years with 63.7% being male and 36.3% being female. Of these patients, 77.0% were white, 10.6% African American, 6.2% Native American and 3.7% Hispanic. The median TAT for all patients was 3.0 days. There were 116 (84.7%) patients treated within 0-4 days (Group 1) and 21 (15.3%) patients treated beyond 4 days (Group 2). Patients in Group 1 had a median survival of 252.5 days compared to those in Group 2 of 188.5 days (p = 0.0958) when analyzed univariately. Multivariable analysis demonstrated TAT of 0-4 days was independently related to OS with a hazard ratio of .604 (95% CI 0.369-0.990, p = 0.0451). The CR rate for Group 1 was 69.8% compared to Group 2 of 54.6% (p = 0.0692). In addition, patients admitted on a weekday (Monday-Friday) were more likely to initiate chemotherapy within 0-4 days as compared to patients admitted on the weekend (Saturday-Sunday) with a p = 0.0102. Conclusion: AML patients treated more than 4 days following admission have decreased OS and a trend toward decreased rate of CR as compared to patients treated within 0-4 days. This finding is independent of age, risk status, WBC count, and distance to hospital. Also, patients admitted on the weekend were more likely to experience delays in initiating chemotherapy compared to those admitted on the weekday. Although a larger sample size and testing in other clinic settings needs to be done to confirm this relationship, this study suggests treating AML patients within 4 days of hospital admission may be associated with improved outcomes. Disclosures No relevant conflicts of interest to declare.
e17587 Background: Survival outcomes remain poor in salivary gland malignancies (SGMs) with multiple poor prognostic factors despite adjuvant radiotherapy. We examined prognostic factors that portended poor survival in resected SGMs to determine possible indications for adjuvant chemoradiotherapy. Methods:Patients who underwent curative resection with or without adjuvant radiotherapy between 2002 and 2014 were identified and retrospective chart review was performed. Bivariate analysis was performed on continuous variables using Analysis of Variance. Chi-Square analysis and Fishers Exact Tests were performed on categorical variables. To evaluate the overall survival (OS) and disease-free survival (DFS), Kaplan-Meier curves and log-rank tests of homogeneity were used. Results: Overall, 99 patients met inclusion criteria. Median follow-up time was 46.8 months. Univariate analysis revealed male sex, smoking history ≥ 10 pack-years, high grade, stage III-IVB, squamous cell histology, and perineural invasion significantly impacted OS and DFS. High-risk histopathology significantly impacted DFS and trended towards poor OS. Positive resection margins trended towards significantly impacting DFS. Multivariate analysis revealed only male sex and perineural invasion significantly impacted OS and DFS. Conclusions: Survival outcomes remain poor for patients with high-grade, late-stage tumors with perineural invasion. Specifically, perineural invasion is a poor prognostic factor regardless of age, histology, stage, and grade. Males and patients with a smoking history ≥ 10 pack-years have worse survival outcomes with male sex being a more influential prognostic factor. Notably, this is the first study to quantify patient’s smoking history in malignant salivary gland tumors and assess the impact of pack-year smoking history on survival outcomes. Given our observed trend, positive resection margins would likely become significant influencer of DFS with larger sample size and longer follow up. Adjuvant chemoradiotherapy should be evaluated in patients with the above-mentioned characteristics.
Adjuvant chemoradiotherapy should be considered for patients with tumors with perineural invasion, especially in males with high-risk histopathology or high-grade, late-stage disease. To our knowledge, this is the first study to assess the impact of pack-year smoking history on survival outcomes.
Distant gastric metastasis to the skin is uncommonly a presenting symptom, although nonspecific paraneoplastic syndromes with dermatologic manifestation including diffuse seborrheic keratoses (Leser-Trelat sign), tripe palms, and acanthosis nigricans have been described in the literature. We report here the case of a 49-year-old woman with gastric adenocarcinoma who presented with cutaneous metastasis as an initial symptom. In our case, metastatic skin lesions responded significantly to EOX chemotherapy (epirubicin+oxaliplatin+capecitabine) despite progression of systemic disease. In similar presentations, a high index of clinical suspicion and skin biopsy are important.
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