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 Houston Digestive Diseases Clinic
  714 FM 1960 West Suite 201 Houston TX 77090


 

  Phone (281) 444-2399   Fax (281) 444-3417   sdkhanmd@aol.com

 
 

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Principal Investigator
S. D. Khan, M.D; M.A.C.G
Gastroenterology, Diagnostic & Therapeutic Endoscopy
sdkhanmd@aol.com

SubInvetigators:
F
amily practice                                                            Internal Medicine       Colorectal Surgery  
Huong Le, MD                  Asaf Qadeer, MD                 Alex Nguyen, MD        Khawaja Azimuddin, MD     
James Fontenot, MD         Quoc Le, MD                                                                  
Blandina Sison, MD           Diane Malone, MD                      
Theresa Falcon, MD          Marion Allen, MD
Hiedi Nashad, MD

Study Coordinator
Gretchen Daulton
manager29@aol.com

ONGOING STUDIES
1
. A Randomized Double-Blind, Parallel Study of Rabeprazole Extended Release 50 mg Versus Esomeprazole 40 mg for healing of and symptomatic relief of Moderate to severe Erosive gastroesophageal Reflux Disease (GERD).                           
Eisai Pharmaceuticals                                                                                   2008

 2.A Randomized Double-Blind, Parallel Study of Rabeprazole Extended Release 50 mg Versus Esomeprazole 40 mg for healing of and symptomatic relief of Mild to Moderate Erosive gastroesophageal Reflux Disease (GERD).                              
Eisai Pharmaceuticals                                                                                    2008

 3. A Randomized double-blind, placebo controlled evaluation of the safety, efficacy, and   pharmacokinetics of multiple
  doses of Basiliximab, with concomitant corticosteroids, in steroid refractory Ulcerative Colitis.
  Cerimon Pharmaceuticals                                                                               2007
  (Recruiting new participants)   

4
. A Multi-center, Randomized, Double blind, Placebo controlled Trial to Evaluate the
   Efficacy, Safety, and Tolerability of Rifaximin 550 MG BID for 6 months in preventing Hepatic Encephalopathy.

   Salix Pharmaceutical, Inc.- RFHE3001                                                             2007
   (Recruiting new participants)
 

5. A Multi-center, open-label Trial to evaluate the long term safety and tolerability of Rifaxamin 550 mg BID in subjects
    with history of Hepatic Encephalopathy.
    Salix Pharmaceutical,Inc.    RFHE3002                                                           
2007
    (Recruiting new participants)
 

6. Clin-AG1003-007 An open label, safety study of AGI-003 ((Arverapamil) in treatment of Irritable Bowel  Syndrome   
    with Diarrhea (IBD-D).
    AGI-Therapeutic Research Ltd.

     
(Recruiting new participants)   

7.
 A Multi-Center, investigator-blinded, randomized, 12-months, Parallel-group, Non-inferiority  Study to Compare the  Efficacy of
    1.6 to 2.4 g Asacol Therapy  QD Versus Divided doses (BID) in maintenance of Remission of Ulcerative Colitis.                             
    (Recruiting new participants). 

CLINICAL TRIALS CONDUCTED AT OUR SITE  
1.
24 weeks double blind, Ibuprofen (800 MG PO TID) controlled to evaluate a combination of NSAID and
    Fomatidine in reducing the risk of NSAID associated endoscopically diagnosed, gastric or duodenal ulcers
    in patients who require the use of long term NSAIDs. 4 endoscopies will be required for each patient. 6 month
    extension study may be possible.
    (Recruitment closed)

2. A Randomized, Double-blind, Placebo controlled, Multicenter, Parallel group Study to assess the Efficacy
   (reduction in Cardiovascular Disease Events) and safety of 100 mg Enteric-coated Acetylsalicylic Acid in patients
  at Moderate risk of Cardiovascular Disease.
  
  (Recruitment closed)

3. AMulti-center, Randomized, Double blind, Placebo controlled Trial to Evaluate the Efficacy, Safety, and
    Tolerability of Rifaximin 550 MG BID for 6 months in preventing Hepatic Encephalopathy.

     Salix Pharmaceutical, Inc.- RFHE3001                                                 2007
  

4. A Multicenter, randomized, double blind, activity controlled trial to evaluate the safety and efficacy Placebo
   controlled, parallel group study of Renzapride in women with constipation-predominant Irritable Bowel
    Syndrome (IBS).

    Quintiles, Inc.- Alizyme Therapeutic                                                2007                    

5. A Multicenter, open label study, treatment Extension Trial to Evaluate the long-term safety and tolerability
   of Mesalamine pellet formulation maintain remission in mild to Moderately active Ulcerative Colitis 3005.
    Parexel Salix Pharmaceutical, Inc.                                                   2006

6. A phase 2 double blind study to evaluate the safety and efficacy of Illaprazole ( 5 MG, 20 MG and 40 MG QD)
   
on healing of Erosive Esophagitis).
   
TAP Pharmaceutical Products Inc.                                                    2007
                                              
7. A Multicentre, randomised, open-label, active controlled, parallel arm study to compare the efficacy of 12
    weeks of treatment with Vildagliptin 100 mg, qd to Thiazolidinedione (TZD) as add-on therapy in patients
    with type 2 diabetes inadequately controlled with Metformin monotherapy in a community-based practice
    setting.
    Novartis Pharmaceutical, Inc.                                                         2006-2007
                                                                                              
8. Randomized, Double blind, Placebo controlled Trial to Evaluate the Efficacy, Safety, and Tolerability of new
    tablet formulation and dosing regimen of Balsalazide Disodium 3.3 G BID versus Mesalamine (5-ASA) as Asacol 
   0.8 G TID in mild to moderately active
   Ulcerative
Colitis  --
BZUC – 3003
   
Salix Pharmaceutical,Inc.                                                               2007
   
9. A phase 3, open-label study to assess the long-term safety of TAK-390MR (60 mg QD and 90 mg QD) incorporating Amendment
    change No. 1 and 2 in patients with Gastroesophageal Disease (GERD).
   TAP Pharmaceutical Products Inc.
                                                                    
                                                       2006
10. A phase 2, Multi-center, Randomized, double-blind, placebo controlled study to assess the efficacy and safety
   of three different doses (275, 550 and 1100 Mg) of Rifaximin administered BID for either two or four weeks in
   the treatment of patients with diarrhea  associated irritable bowel syndrome.
   Salix Pharmaceutical, Inc. - RFIB-2001
                                                                                                  2007
11. A randomized, double blind, placebo controlled, Multicenter, phase III study of Rosuvastatin (Crestor) 20 MG
    in the primary prevention of Cardiovascular events among patients with low levels of LDL-Cholesterol
    and elevated C reactive protein
.
    AstraZenica                                                                              2006

12. A Multicenter, randomized, double blind, Placebo controlled Trial to evaluate the use of Mesalamine Pellet
    Formulation 1.5G QD to maintain the remission from mild to moderate Ulcerative Colitis  3004
    Parexel Salix Pharmaceutical, Inc.                                                2006

13. A Multicenter, randomized, double blind, Placebo controlled Trial to evaluate the safety and efficacy of new
    tablet formulation and dosing regimen of Balsalazide Disodium 3.3 G BID Versus placebo in mildly to
     Moderately active Ulcerative Colitis. 3002

     Parexel, Salix Pharmaceutical, Inc.                                              2006

14.  A Multicenter, open label study, treatment Extension Trial to Evaluate the long-term safety and
     tolerability of Mesalamine pellet formulation maintain remission in mild to Moderately active Ulcerative
      Colitis 3005.

     Parexel Salix Pharmaceutical, Inc.                                                 2006
  

15. A phase III study to evaluate the efficacy and safety of TAK-390MR(60 mg QD and 90 mg QD) and an
    active Comparator, Lansoprazole (30mg QD) on healing of Erosive Esophagitis Grade c&D only.
    Tap Pharmaceutical                                                                   2006

16.- A phase III study to evaluate the efficacy and safety of TAK-390MR (30 mg QD and 60 mg QD) as
    compared to placebo on symptoms relief in subjects with symptomatic Non Erosive Gastroesophageal
     Reflux Disease (GERD)
protocol T-GD05-137 incorporating Amendment dated 23 March 2006 (CRRI 0406006)
    Tap Pharmaceutical                                                                   2006

17. A Multi-center, open label trial to evaluate the long term safety and tolerability of a New Balsalazide Disodium
     Tablet formulation in patients with mild to Moderately Ulcerative Colitis BZUC3005
      
Parexel Salix Pharmaceutical, Inc.                                               2006

18. A phase III, Multicenter, randomized, double blind study, placebo controlled, parallel- arm study of the efficacy
     and safety of OPC-6535 tablets in the treatment of subjects with active Ulcerative Colitis
     Otsuka Maryland research Institute                                             2005-2006

19. A phase IIb, multicenter, randomized, double blind, placebo controlled, parallel group, dose ranging study in     
     subjects with Functional Dyspepsia.                                                   
                                                                                                 2005-2006 
20. A. prospective, multicenter, open label, comparative, efficacy study of Pegasys plus Copegus in treatment-naïve   
     Latino patients with Chronic Hepatitis C-Genotype 1, as compared to treatment-naïve Non-Latino Caucasian  
     patients with Chronic Hepatitis C-genotype       2006
                                                                                                                                           
21. A phase III study to evaluate the efficacy and safety of TAK-390MR (60 mg  QD and 90 mg QD) compared to    
     placebo on Symptom relief in subjects with symptomatic Non-Erosive Gastroesophageal Reflux Disease (GERD).
      TAP Pharmaceutical                                                                 2006

22. A Multicenter, randomized, double blind, Placebo controlled Trial to evaluate the safety and  efficacy of new
      tablet formulation and dosing regimen of Balsalazide Disodium 3.3 Grams BID Versus placebo in mildly to  
       Moderately active Ulcerative Colitis - 3002

      Parexel Salix Pharmaceutical, Inc                                                2006

23.  A Double-Blind placebo-controlled, Randomized, multicenter study to investigate the safety of and efficacy 
      of 2mg TID of Cilansetron over 12 weeks in diarrhea predominant Irritable Bowel Syndrome subjects.
       Quintiles/Solvay Quintiles                                                         2002 - 2003
       (Phase III,  Goal 10, Screened 27, Enrolled 15 )

24. A 24 weeks Randomized, open label study of Healthcare Resource use, quality of life
      and productivity with Alosetron 1 mg twice daily versus traditional therapy in females
      with non-constipated Irritable Bowel  Syndrome.
     Quintiles /Glaxo Wellcome                                                            2000
     (Phase III,  Goal 6, Screened 12, Enrolled 6 ) 
    

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