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CTRI Number  CTRI/2023/12/060797 [Registered on: 27/12/2023] Trial Registered Prospectively
Last Modified On: 26/12/2023
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Other (Specify) [rTMS ]  
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   efficacy of repetitive transcranial magnetic stimulation (rTMS)in chronic migraine with vestibular symptoms 
Scientific Title of Study   To study the Efficacy of repetitive transcranial magnetic stimulation (rTMS)in chronic migraine with vestibular symptoms, An open labelled randomized sham control study. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Karnati Uday Kumar  
Designation  Senior resident  
Affiliation  aiims bhubaneswar 
Address  Department of Neurology AIIMS Bhubaneswar Sijua Dumuduma Bhubaneswar

Khordha
ORISSA
751019
India 
Phone  09052698569  
Fax    
Email  karnatiudaykumar@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sanjeev Kumar Bhoi 
Designation  proffesor  
Affiliation  aiims bhubaneswar  
Address  Department of Neurology AIIMS Bhubaneswar Sijua Dumuduma Bhubaneswar

Khordha
ORISSA
751019
India 
Phone  9919787978  
Fax    
Email  bhoisanjeev@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Karnati Uday Kumar  
Designation  Senior resident  
Affiliation  aiims bhubaneswar 
Address  Department of Neurology AIIMS Bhubaneswar Sijua Dumuduma Bhubaneswar

Khordha
ORISSA
751019
India 
Phone  9052698569  
Fax    
Email  karnatiudaykumar@gmail.com  
 
Source of Monetary or Material Support  
AIIMS Bhubneswar , sijua , patrapada , 751019 
 
Primary Sponsor  
Name  AIIMS Bhunaneswar 
Address  sijua, patrapada, bhubaneswar  
Type of Sponsor  Research institution and hospital 
 
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 
Karnati Uday Kumar   AIIMS Bhubaneswar   Department of Neurology, room no - 237, sijua, patrapada, BHUBANESWAR
Khordha
ORISSA 
9052698569

karnatiudaykumar@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics committee AIIMS Bhubaneswar  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: G438||Other migraine,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  repetitive transcranial magnetic stimulation (rTMS)   Each rTMS session will last 412.4 seconds and deliver 600 pulses.The impulses will be delivered in 10 trains, each containing 60 pulses at 10 Hz and with 45-second intertrain interval. There will be three sessions offered on alternate days. total of 3 sessions .  
Comparator Agent  standard medication for migraine   standard medication for migraine  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  90.00 Year(s)
Gender  Both 
Details  a)Patients fulfilling the diagnostic criteria of chronic migraine according to ICHD-3criteria , that is headaches on 15 days or more days per month in a patient with prior migraine history , with at least 8 days per month being migraine for at least 3 months .
b)Patients with chronic migraine with vestibular symptoms .
c)Adults of > 18 years of age.  
 
ExclusionCriteria 
Details  a)Patients with prior history of hearing loss ,non migranous vestibular symptoms , hearing aids , implants .
b)Patients with pregnancy,CLD,CKD,malignancy,severe hypertension, pacemaker or metallic implants, and history of seizures or structural brain lesions , advanced heart failure have been excluded . 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
1.The primary outcome measures were defined at 1 month as
follows:
a)Reduction in headache frequency by 50%
b)Improvement in severity on Visual Analogue
Scale (VAS) (0-100) by 50 %
c)Functional disability
d)Adverse events
e)Reduction of DHI score 50% 
The primary outcome measures were defined at 1 month 
 
Secondary Outcome  
Outcome  TimePoints 
Secondary outcome will be
1. To study the assessment of VEMP
a)Mean peak latency N10 , P15 and amplitude N10-P15 oVEMP.
b)Mean peak latency of P13, N23 and amplitude of P13- N23 of cVEMP .
c)Inter aural difference with Asymmetric ratio( AR) of oVEMP, cVEMP.  
The outcome parameters were noted after each rTMS session; thereafter at the 4th week. The patients visited for follow-up at 1 month  
 
Target Sample Size   Total Sample Size="62"
Sample Size from India="62" 
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 2/ Phase 3 
Date of First Enrollment (India)   06/01/2024 
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="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary  

Migraine is a disease that stays  lifelong . It needs abortive

treatment for acute headache and prophylactic treatment for recurrent headache. Experimental and human

research have shown that abnormality of trigeminovascular

system, brainstem and cerebral cortex are involved in  migraine pathogenesis. It has been shown experimental studies that  single pulse of transcranial magnetic stimulation (TMS) can

interrupt cortical excitability in depression(6,7) . This finding has opened the gate for evaluating the  TMS for acute migraine treatment.High-frequency rTMS may increase the cortical activity found in

controlling pain(8)  or  decrease cortical excitation(9). So this can be used in migraine prophylaxis. Repetitive Transcranial magnetic stimulation (rTMS) is a painless, easy to deliver, affordable neurophysiological technique widely used as treatment. It produces sub or suprathreshold currents by electromagnetic induction, in the cortex. There are two types of rTMS modalities are available. One is high-frequency (HF-rTMS) stimulation (>1 Hz).It increases excitability of motor cortex of the stimulated area. Second is low-frequency (LF-rTMS) stimulation (⩽1 Hz) .It usually causes a reduction in cortical  excitation .Coil position during rTMS session is defined by the area where motor threshold (MT) is recorded. MT is defined as lowest transcranial magnetic stimulation intensity needed to produce a motor evoke potential (MEP) of amplitude >50µv in at least 6 of 10 trials. The rTMS role has been proven in other disease like depression, migraine prophylaxis with minimal side effects. Various studies has shown mixed results about rTMS role in migraine prophylaxis. In 27 migraine patients who are given Low-frequency rTMS shown improvement of headache frequency but without significant difference with respect to  sham stimulation group(9). There are two studies with High-frequency rTMS. A study, involving 11 migraine patients , with 6 patients receiving 400 pulses of rTMS  at 20 Hz at 90 % of MT for 12 sessions  and five patients received sham stimulation(8). Frequency of headache, rescue pill intake decreased significantly. In  rTMS

group  this effect persisted for 8 weeks . This effect of rTMS

was not shown in other studies. Low-frequency rTMS has was not effective when two trains of one Hz ,500 pulses was given  for

five contineous days(9) . An open-labeled trial shown ten Hz

rTMS consisting of 600 pulses in ten trains on alternate

days for three days was given(10). This trial shown efficacy in decreasing headache frequency by more than 50 % among 80 % of patients. This benefit stayed for four weeks . These variability about effect of rTMS as prophylaxis in chronic migraine is needed to be addressed.

 
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