Publications

Abstracts
Gordon S., Kahaleh M., Chang K., DeMeester S., Diehl D., Gress F., Sharzehi K., Smith M.: Use of Volumetric Laser Endomicroscopy to Guide Tissue Resection in the Management of Barrett’s Esophagus Increases the Likelihood of Finding Advanced Disease.  Gastroenterology 2016; 150(4):S264.

Diehl D., Ganguly E., Pleskow D., Smith M.: Adequate Centering and Probe Placement Are Easily Achieved During Volumetric Laser Endoscopy, Regardless of Balloon Size and Anatomic Findings.  Gastroenterology 2016; 150(4):S434-435.

Rezk A., Leddy J., Ulrich E., Butt W., Miao C., Ahuja N., Khara H., Smith R., Shah N.: Age No Bar With New Anti-HCV Directly Acting Anti-Viral Agents: Real World Experience at a Single Tertiary Care Center in Rural Pennsylvania.  Gastroenterology 2016; 150(4):S1106.

Mok S., Arif M., Khara H., Ho H., Diehl D., Elfant A.: The Safety and Efficacy of Minimal Endoscopic Biliary Sphincerotomy With Endoscopic Papillary Balloon Dilation (mEBS+EPBD) in Patients Using Anticoagulation.  Gastrointestinal Endoscopy 2016; 83(5):AB140-AB141.

Nieto J., Sigua-Arce J., Koul A., Kim A., Tyberg A., Kaheleh M., Lankarani A., Diehl D., Waxman I., Willingham F.: EUS-Guided Drainage of Pancreatic Fluid Collections in Pediatric Patients Using a Novel Fully Covered Lumen-Apposing Self Expanding Metal Stent: A Multicenter Case Series.  Gastrointestinal Endoscopy 2016; 83(5):AB168.

Storm A., Griffith A., Diehl D., Baron T., Kumar N., Khara H., Thompson C.: Flexible Endoscopic Zenker’s Diverticulotomy: A Multicenter Experience With Available Tools.  Gastrointestinal Endoscopy 2016; 83(5):AB584.

Storm A., Diehl D., Griffith A., Baron T., Khara H., Thompson C.: Per Oral Endoscopic Myotomy for Zenker’s is Highly Effective in Patients Who Failed or Were Denied Surgical Treatment.  Gastrointestinal Endoscopy 2016; 83(5):AB628-AB629.

Yang D., Amin S., Mullady D., Edmundowicz S., DeWitt J., Khashab M., Wang A., Nagula S., BuFscaglia J., Bucobo J., Wagh M., Draganov P., Stevens T., Vargo J., Khara H., Diehl D., Keswani R., Komanduri S., Yachimski P., Prabhu A., Kwon R., Watson R., Goodman A., Bienas P., DiMaio C.: EUS-Guided Transmural Drainage of Pancreatic Pseudocysts:  Does the Presence of Solid Debris Impact Clinical Outcomes? A Large, Multicenter Study. American Journal of Gastroenterology 2015; 110(1):S16-17.

McKee J., Butt W., Huseini M., Khara H., Komar M., Johal A.:  Don’t Count Out EUS: Insulinoma Diagnosed by Endoscopic Ultrasound in a Gastric Bypass Patient. American Journal of Gastroenterology 2015; 110(1):S198.

Kim A., Diehl D.:  Use of AXIOS Stent in a 5-Year-Old for Management of a Pancreatic Fluid Collection. American Journal of Gastroenterology 2015; 110(1):S212-213.

Gunnerson C., Khan S., Shellenberger M.:  Conservative Management of an Endoscopic Duodenal Wall Perforation With Active Leak. American Journal of Gastroenterology 2015; 110(1):S224.

Rezk A., Ahuja N., Khara H., Komar M., Smith R.:  Autoimmune Hepatitis Masquerading as Wilson’s Disease. American Journal of Gastroenterology 2015; 110(1):S315.

Rezk A., Baran H., Carroll A., Mowery A., Komar M., Ahuja N.:  A Case of Doxycycline and Cefuroxime-Induced Liver Injury. American Journal of Gastroenterology 2015; 110(1):S315.

McKee J., West S., Ahuja N., Ravindran N., Khara H., Komar M., Shah N.:  Drug-Induced Liver Injury With Warzone: A War Against Drug Supplements? American Journal of Gastroenterology 2015; 110(1):S338.

McKee J., West S., Smith R., Ahuja N., Komar M., Shah N.:  No Medication is Benign: Fulminant Hepatic Failure and Autoimmune Hemolytic Anemia After Trimethoprim/ Sulfamethoxazole Use. American Journal of Gastroenterology 2015; 110(1):S338.

Ahuja N., Shah N., Huseini M., Hamdani S., McKee J., Butt W., Miao C., Le M., Kotru A., Khara H., Johal A., Patel A., Varma C., Komar M., Smith R.:  Splenic Artery Steal Syndrome Post Liver Transplant Causing Ischemic Biliary Stricture. American Journal of Gastroenterology 2015; 110(1):S342.  

West S., Gunnerson C., Komar M., Shah N.:  An Unintended Consequence: Chemotherapy Associated Steatohepatitis. American Journal of Gastroenterology 2015; 110(1):S366.

Kim A., Shellenberger J.:  Gastric Outlet Obstruction From Metastatic Lobular Breast Carcinoma. American Journal of Gastroenterology 2015; 110(1):S503.

Ravindran N., Butt W., Thomas B., Elmore J., Garvin R., Komar M., Khara H.:  GI Bleed Due to Aortoenteric Fistula: Hold the Scope! American Journal of Gastroenterology 2015; 110(1):S540.

Diehl, D., Khara H., Fairley K.: Same-Day Discharge After Flexible Endoscopic Incisional Therapy (FEIT) for Zenker’s Diverticulum. American Journal of Gastroenterology 2015; 110(1):S738.

West S. Rezk A., Shah L., Ulrich E., Shah N., Smith R., Khara H., Komar M., Ahuja N.: Insurance Company Denial Patterns for Sofosbuvir-Based HCV Treatment at a Tertiary Referral Center in Rural Pennsylvania. American Journal of Gastroenterology 2015; 110(1):S888.

Shah N., Rezk A., Leddy J., Ulrich E., Butt W., Miao C., Ahuja N., Khara H., Smith R.: Age No Bar With Newer Anti-HCV Direct-Acting Antiviral Agents (DAA): Real World Experience at a Single, Academic Tertiary Care Center in Rural Pennsylvania. American Journal of Gastroenterology 2015; 110(1):S898.

West S., Miao C., Yuasa K., Komar M., Prall S.: Low Utilization of DEXA Scan for IBD Patients on Long-Term Steroid: A Single-Center Experience. American Journal of Gastroenterology 2015; 110(1):S959.

Shah N., Huseini M., Chen Z., Persing K., Zeiber H., Diehl D., Johal A., Khara H.: Effective Resource Utilization With an Early Discharge Protocol for EUS-Guided Liver Biopsy. American Journal of Gastroenterology 2015; 110(1):978-980.

Baran H., Rezk A., Kesar R., Berger A., Kethireddy S., Stamm J.:  Procalcitonin: Characterization and Outcome in a Large Healthcare System. PCT Abstract Chest 2015. 

Publications
Adler D., Diehl D.: Missed Lesions in Endoscopic Ultrasound. Endoscopic Ultrasound 2015; 4(3):165-7.  PMID: 26374573

Bhattarai M., Bansal P., Diehl D., Nepal H.: Pancreatic Abscess: An Unusual Presentation of Pancreatic Tail Cancer. Journal of Nepal Health Research Council 2015; 13(31):245-7.  PMID: 27005720

Yang D., Amin S., Gonzalez S., Mullady D., Hasak S., Gaddam S., Edmundowicz S., Gromski M., DeWitt J., El Zein M., Khashab M., Wang A., Gaspar J., Uppal D., Nagula S., Kapadia S., Buscaglia J., Bucobo J., Schlachterman A., Wagh M., Draganov P., Jung M., Stevens T., Vargo J., Khara H., Huseini M., Diehl D., Keswani R., Law R., Komanduri S., Yachimski P., DaVee T., Prabhu A., Lapp R., Kwon R., Watson R., Goodman A., Chhabra N., Wang W., Benias P., Carr-Locke D., DiMiao C.: Transpapillary Drainage Has No Added Benefit on Treatment Outcomes in Patients Undergoing EUS-Guided Transmural Drainage of Pancreatic Pseudocysts: a Large Multicenter Study. Gastrointestinal Endoscopy 2016; 83(4):720-9.  PMID: 26548849

Ali R., Wild D., Shieh F., Diehl D., Fischer M., Tamura W., Rubin D., Kumbhari V., Okolo P., Storm A., Halpern Z., Neumann H., Khara H., Pochapin M., Gross S.: Deep Enteroscopy With a Conventional Colonoscope: Initial Multicenter Study by Using a Through-The-Scope Balloon Catheter System. Gastrointestinal Endoscopy 2015; 82(5):855-60.  PMID: 26092618

Saxena P., Diehl D., Kumbhari V., Shieh F., Buscaglia J., Sze W., Kapoor S., Komanduri S., Nasr J., Shin E., Singh V., Lennon A., Kalloo A., Khashab M.: A US Multicenter Study of Safety and Efficacy of Fully Covered Self-Expandable Metallic Stents in Benign Extrahepatic Biliary Strictures. Digestive Diseases and Sciences 2015; 60(11):3442-8.  PMID: 25850628

Pineda J., Diehl D., Miao C., Johal A., Khara H., Bhanushali A., Chen E.: EUS-Guided Liver Biopsy Provides Diagnostic Samples Comparable With Those Via the Percutaneous or Transjugular Route. Gastrointestinal Endoscopy 2016; 83(2):360-5.  PMID: 26301407

Rezk A., Gunnerson A., Komar M.: A Disease That is Often Missed Without Gastrointestinal Symptoms. Gastroenterology 2016; 150(5):1096-7.  PMID: 27032707

Baran H., Rezk A., Kesar R., Berger A., Kethireddy S., Stamm J.:  Procalcitonin: Characterization and Outcome in a Large Healthcare System. PCT Abstract Chest 2015. 

West S., Shellenberger MJ: No Stone Left Unturned: Using Choledocholithiasis to Open a Papillary Stenosis Via a Choledochodudenal Fistula. ACG Case Reports Journal 2016; 3(2):118-20.  PMID: 26958565

Kim A., Shellenberger M., Chen Z., Li J.: Case Report of Gastric Outlet Obstruction From Metastatic Lobular Breast Carcinoma. BMC Gastroenterology 2015; (15):120.  PMID: 26408025

Noel O., Still C., Argyropoulos G., Edwards M., Gerhard G.: Bile Acids, FXR, and Metabolic Effects of Bariatric Surgery. Journal of Obesity 2016; 2016:4390254.  PMID: 27006824

Benotti P., Wood G., Argyropoulos G., Pack A., Keenan B., Gao X., Gerhard G., Still C.: The Impact of Obstructive Sleep Apnea on Nonalcoholic Fatty Liver Disease in Patients With Severe Obesity. Obesity (Silver Spring) 2016; 24(4):871-7.  PMID: 26880657

Gerhard G., Still C., DiStefano J.: High False-Negative Rate for Nonalcoholic Steatohepatitis in Extreme Obesity. Gastroenterology 2016; 150(1):283-4.  PMID: 26616574

Petrick A., Benotti P., Wood G., Still C., Strodel W., Gabrielson J., Ralston D., Chu X., Argyropoulos G., Ibele A., Gerhard G.: Utility of Ultrasound, Transaminases, and Visual Inspection to Assess Nonalcoholic Fatty Liver Disease in Bariatric Surgery Patients. Obesity Surgery 2015; 25(12):2368-75.  PMID: 26003548

Leti F., Malenica I., Doshi M., Courtright A., Van Keuren-Jensen K., Legendre C., Still C., Gerhard G., DiStefano J.: High-Throughput Sequencing Reveals Altered Expression of Hepatic MicroRNAs in Nonalcoholic Fatty Liver Disease-Related Fibrosis. Translational Research: The Journey of Laboratory and Clinical Medicine 2015; 166(3):304-14.  PMID: 26001595

Critchley-Thorne R., Duits L., Prichard J., Davison J., Jobe B., Campbell B., Zhang Y., Repa K., Reese L., Li J., Diehl D., Jhala N., Ginsberg G., DeMarshall M., Foxwell T., Zaidi A., Lansing T., Rustgi A., Bergman J., Falk G.:  A Tissue Systems Pathology Assay for High-Risk Barrett’s Esophagus. Cancer Epidemiology, Biomarkers and Prevention 2016; 25(6):958-68.  PMID: 27197290

Lent M., Bailey-Davis L., Irving B., Wood G., Cook A., Hirsch A., Still C., Benotti P., Franceschelli-Hosterman J.:  Bariatric Surgery Patients and Their Families: Health, Physical Activity, and Social Support.  Obesity Surgery 2016; 26(5).  PMID: 27173819 [epub ahead of print]

Lee C., Wood G., Lazo M., Brown T., Clark J., Still C., Benotti P.: Risk of Post-Gastric Bypass Surgery Hupoglycemia in Nondiabetic Individuals: A Single Center Experience.  Obesity (Silver Spring) 2016; 24(6):1342-8.  PMID: 27225597

Hunsinger M., Wood G., Still C., Petrick A., Blansfield J., Shabahang M., Benotti P.: Maximizing Weight Loss After Roux-En-Y Gastric Bypass May Decrease Risk of Incident Organ Cancer.  Obesity Surgery 2016; 26(4).  PMID: 27129801   [epub ahead of print]

Hayes S., Stoeckel N., Napolitano M., Collins C., Wood G., Seiler J., Grunwald H., Foster G., Still C.: Examination of Beck Depression Inventory-II Factor Structure Among Bariatric Surgery Candidates.  Obesity Surgery 2015; 25(7):1161.  PMID: 25392078

Leit F., Malenica I., Doshi M., Courtright A., Van Keuren-Jensen K., Legendre C., Still C., Gerhard G., DiStefano J.: High-Throughput Sequencing Reveals Altered Expression of Hepatic MicroRNAs in Nonalcoholic Fatty Liver Disease-Related Fibrosis.  Journal of Cardiovascular Translational Research 2015; 166(3):304-314.  PMID: 26001595

Nead K., Li A., Neupane B., Gustafsson S., Butterworth A., Engert J., Davis A., Hegele R., Miller R., Den Hoed M., Khaw K., Kilpelainen T., Wareham N., Edwards T., Hallmans G., Varga T., Kardia S., Smith J., Zhao W., Faul J., Weir D., Mi J., Xi B., Quinteros S., Cooper C., Sayer A., Jameson K., Grontved A., Fornage M., Sidney S., Hanis C., Highland H., Haring H., Heni M., Lasky-Su J., Weiss S., Gerhard G., Still C., Melka M., Pausova Z., Paus T., Grant S., Hakonarson H., Price R., Wang K., Scherag A., Hebebrand J., Hinney A., Biobank Japan, AGEN-BMI, GIANT Consortium, Franks P., Frayling T., McCarthy M., Hirschhorn J., Loos R., Ingelsson E., Gerstein H., Yusuf S., Beyene J., Anand S., Meyre D.: Contribution of Common Non-Synonymous Variants in PCSK1 to Body Mass Index Variation and Risk of Obesity: A Systemic Review and Meta-Analysis With Evidence From Up to 331,175 Individuals.  Human Molecular Genetics 2015; 24(12):3582-94.  PMID: 25784503

Presentations at regional or national meetings

Digestive Disease Week. Poster Presentation – Use of Volumetric Laser Endomicroscopy to Guide Tissue Resection in the Management of Barrett’s Esophagus Increases the Likelihood of Finding Advanced Disease. May 2016.

Digestive Disease Week. Poster Presentation – Adequate Centering and Probe Placement Are Easily Achieved During Volumetric Laser Endoscopy, Regardless of Balloon Size and Anatomic Findings. May 2016.

Digestive Disease Week. Poster Presentation – Age No Bar With New Anti-HCV Directly Acting Anti-Viral Agents: Real World Experience at a Single Tertiary Care Center in Rural Pennsylvania. May 2016.

Digestive Disease Week. Poster Presentation – The Safety and Efficacy of Minimal Endoscopic Biliary Sphincerotomy With Endoscopic Papillary Balloon Dilation (mEBS+EPBD) in Patients Using Anticoagulation. May 2016.

Digestive Disease Week. Poster Presentation – EUS-Guided Drainage of Pancreatic Fluid Collections in Pediatric Patients Using a Novel Fully Covered Lumen-Apposing Self Expanding Metal Stent: A Multicenter Case Series. May 2016.

• Digestive Disease Week. Poster Presentation – Flexible Endoscopic Zenker’s Diverticulotomy: A Multicenter Experience With Available Tools. May 2016.

Digestive Disease Week. Poster Presentation – Per Oral Endoscopic Myotomy for Zenker’s is Highly Effective in Patients Who Failed or Were Denied Surgical Treatment. May 2016.

Obesity Week. Poster Presentation – Assessment of Pre and Post-Op Iron Nutrition in a Large Cohort of Bariatric Surgery Patients. November 2015.

Obesity Week. Poster Presentation – Resource Utilization Pre and Post Bariatric Surgery. November 2015.

Obesity Week. Oral Presentation – Impact of the Level of Obesity on Mobility in Patients Referred For Weight Management. November 2015.

Obesity Week. Oral Presentation – Impact of the Level of Obesity on PROMIS Physical Function Scores in Patients Referred For Weight Management. November 2015.

Obesity Week. Oral Presentation – Risk of Post-Bariatric Surgery Hypoglycemia in Nondiabetic Individuals: A Single Center Experience From the Geisinger Medical Center. November 2015.

Funded clinical trials/research
Changes in Objectively-Measured Physical Activity and Sedentary Behavior Among Bariatric Surgery Patients. Principal investigator: Christopher Still, MD

Enterome Obesity Biomarker Study. Principal investigator: Christopher Still, MD

The Impact of Bariatric Surgery on Joint Replacement Outcomes. Principal investigator: Christopher Still, MD

The Collateral Impact of Bariatric Surgery on Families. Principal investigator: Christopher Still, MD

Hypoglycemia – Understanding its Occurrence, Risk Factors and Mechanisms. Principal investigator: Christopher Still, MD

Epigenetic Regulation of Progression of Nonalcoholic Fatty Liver Disease.  Principal investigator: Christopher Still, MD

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Effect of Long-Term Treatment With Belviq (Lorcaserin HCL) on the Incidence of Major Adverse Cardiovascular Events and Conversion to Type 2 Diabetes Mellitus in Obese.  Principal investigator: Christopher Still, MD

Obesity and Dietary Assessment in Aging Rural Populations. Principal investigator: Christopher Still, MD

Modulation of Age-Related Epigenetic Drift By Dietary Factors. Principal investigator: Christopher Still, MD

Regeneron and Geisinger Collaboration. Principal investigator: Christopher Still, MD

Mid-Atlantic Nutrition and Obesity Center. Principal investigator: Christopher Still, MD

Human Population Based Genetic Studies to Elucidate the Biology of NAFLD. Principal investigator: Christopher Still, MD

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study Assessing the Effect of Gelesis100 on Body Weight in Overweight and Obese Subjects With and Without Type 2 Diabetes. Principal investigator: Christopher Still, MD

A Study to Compare HBA1C Results in Blood Samples Collected Using the TAP100 Device With Results Obtained by Venipuncture. Principal investigator: Christopher Still, MD

Integrating Big Data for Biomedical Discovery; Methods, Tools, and Applications. Principal investigator: Christopher Still, MD