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CTRI Number  CTRI/2020/03/024235 [Registered on: 25/03/2020] Trial Registered Prospectively
Last Modified On: 17/03/2020
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   To evaluate the effect of tablet pregabalin and tablet duloxetine with tablet pregabalin and tablet nortriptyline in neuropathic pain after herpes and changes in HLA-A33 and HLA-B44 GENES. 
Scientific Title of Study   A RANDOMIZED COMPARATIVE STUDY EVALUATING THE EFFICACY OF PREGABALIN AND DULOXETINE Versus PREGABALIN AND NORTRIPTYLINE AND THE MODULATION OF mRNA EXPRESSION OF HLA-A33 AND HLA-B44 GENES IN PATIENTS OF POST-HERPETIC NEURALGIA 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Ashok Kumar 
Designation  Professor,Head of Department, 
Affiliation  University College Of Medical Sciences and GTB Hospital  
Address  Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
East
DELHI
110095
India 
Phone  9810431367  
Fax    
Email  profashoksaxena2@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Ashok Kumar 
Designation  Professor,Head of Department, 
Affiliation  University College Of Medical Sciences and GTB Hospital  
Address  Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
East
DELHI
110095
India 
Phone  9810431367  
Fax    
Email  profashoksaxena2@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Prerna Vasudev 
Designation  Post Graduate student  
Affiliation  University College Of Medical Sciences and GTB Hospital  
Address  Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
Department Of Anaesthesiology and Critical Care,Second Floor,GTB Hospital,University College of Medical Sciences,Dilshad Garden,New Delhi
East
DELHI
110095
India 
Phone  9717819078  
Fax    
Email  vasudevprerna2@gmail.com  
 
Source of Monetary or Material Support  
University college of medical sciences and GTB Hospital,Dilshad Garden,New Delhi-110095 
 
Primary Sponsor  
Name  University College Of Medical Sciences  
Address  University College of Medical Sciences,Dilshad Garden,New Delhi 
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Prerna Vasudev  University College of Medical Sciences and GTB Hospital  Department of anaesthesiology and critical care,second floor,university college of medical sciences and GTB hospital,Dilshad garden,new delhi
East
DELHI 
9717819078

vasudevprerna2@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee-Human Research  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: L089||Local infection of the skin and subcutaneous tissue, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Comparator Agent  Tablet Pregabalin and Tablet Duloxetine in comparison with tablet Pregabalin and tablet Nortriptyline in patients of post herpetic neuralgia.  Tablet Pregabalin 75mg BD and Tablet Duloxetine 20mg BD in comparison with Tablet Pregabalin 75 mg BD and tablet Nortriptyline 10mg BD in patients of post herpetic neuralgia. 
 
Inclusion Criteria  
Age From  1.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  1.Patients should have a diagnosis of PHN with evident hyperalgesia and allodynia.
2. Patients of PHN should have pain for at least 12 weeks after the healing of rash.
3.Pain intensity ≥ 4 on 10 of NRS-pain scale 
 
ExclusionCriteria 
Details  1.Patients with history of neurological intervention for PHN.
2.Evidence of other sources of chronic or acute pain that may confound the diagnosis
3. Known history of intake Pregabalin or Duloxetine for PHN in past 4 weeks.
4. Patients with past h/o MI, DM, pancreatitis and vasculitis.
5. Patients with evidence of renal impairment/history of alcohol consumption and smoking.
6.Patients with psychiatric or substance abuse disorder. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
Proportion of patients achieving NRS-pain score of 4/10 at the end of 12th week in both
the groups.
2. The neuropathic component of pain using NPSI score in both the groups. 
At baseline and at the end of 1st week, 2nd week, 4th week, 8th week and 12th week. 
 
Secondary Outcome  
Outcome  TimePoints 
1. NRS-sleep score in the two groups at various designated intervals.
2. PDQ score in both the groups at various designated intervals.
3. The quality of life (QoL) using SF-12 score in the two groups at various designated
intervals.
4. Modulation in mRNA expressions of HLA-A33 and HLA-B44 genes at baseline and after
12 weeks of treatment. 
At baseline and at the end of 1st week, 2nd week, 4th week, 8th week and 12th week. 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   01/04/2020 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   nil 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Brief Summary   The present randomized comparative study evaluating the efficacy of pregabalin and duloxetine versus Pregabalin and Nortriptyline and the modulation of mRNA expression of HLA-A33 and HLA-B44 genes in the management of post-herpetic neuralgia.Patients with diagnosis of PHN with evident hyperalgesia and allodynia or patients of PHN having pain for at least 12 weeks after the healing of rash or Pain intensity ≥ 4 on 10 of NRS-pain scale will be included.Patients will be excluded if there is history of neurological intervention for PHN or evidence of other sources of chronic or acute pain that may confound the diagnosis or Known history of intake Pregabalin or Duloxetine for PHN in past 4 weeks or past h/o MI, DM, pancreatitis and vasculitis or any evidence of renal impairment/history of alcohol consumption and smoking or psychiatric or substance abuse disorder.Patients suffering from PHN will be divided into two groups of twenty-five patients each by random allocation. One group will receive combination of Pregabalin plus Duloxetine and other group Pregabalin and Nortriptyline. Assessment of pain will be done at baseline and at the end of 1st week,2nd week,4th week,8th week and 12th week.The sample size for the study will be 25 patients in each group.Primary outcome measure is NRS-pain score.
Secondary outcome measures are NPSI, NRS-sleep score,PDQ score ,quality of life (QoL) using SF-12 score. Modulation in mRNA expressions of HLA-A33 and HLA-B44 genes at baseline and after 12 weeks of treatment.
 
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