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CTRI Number  CTRI/2025/07/091947 [Registered on: 29/07/2025] Trial Registered Prospectively
Last Modified On: 29/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A study comparing two drugs in medical termination of pregnancy  
Scientific Title of Study   Letrozole versus mifepristone pre-treatment with misoprostol in medical termination of pregnancy; A randomized controlled trial  
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 Vinus Bansal 
Designation  Junior Resident  
Affiliation  Dr RPGMC Kangra at Tanda Himachal Pradesh 
Address  Department of Obstetrics and Gynaecology Dr RPGMC Kangra at Tanda Himachal Pradesh
Dr. Rajendra Prasad Government Medical College, Tanda, Kangra District, Himachal Pradesh - 176001, India.
Kangra
HIMACHAL PRADESH
176001
India 
Phone  6283611796  
Fax  01892-267115  
Email  bansal1531@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  DR MAMTA MAHAJAN 
Designation  Associate Professor 
Affiliation  Dr RPGMC Kangra at Tanda Himachal Pradesh 
Address  Department of Obstetrics and Gynaecology Dr RPGMC Kangra at Tanda Himachal Pradesh
Dr. Rajendra Prasad Government Medical College, Tanda, Kangra District, Himachal Pradesh - 176001, India.
Kangra
HIMACHAL PRADESH
176001
India 
Phone  8219953230  
Fax  01892-267115  
Email  mamtamahajan@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Mamta Mahajan 
Designation  Assistant Professor  
Affiliation  Dr RPGMC Kangra at Tanda Himachal Pradesh 
Address  Department of Obstetrics and Gynaecology Dr RPGMC Kangra at Tanda Himachal Pradesh
Dr. Rajendra Prasad Government Medical College, Tanda, Kangra District, Himachal Pradesh - 176001, India.
Kangra
HIMACHAL PRADESH
176001
India 
Phone  8219953230  
Fax  01892-267115  
Email  mamtamahajan@gmail.com  
 
Source of Monetary or Material Support  
Dr. Rajendra Prasad Government Medical College, Tanda, Kangra District, Himachal Pradesh - 176001, India. 
 
Primary Sponsor  
Name  Dr Rajendra Prasad Government Medical College Kangra at Tanda 
Address  VPO Tanda Kangra Himchal Pradesh 176001 
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 Vinus Bansal   Dr Rajendra Prasad Government Medical Kangra at Tanda Himachal Pradesh  Opd 12 , Department of Obstetrics and Gynaecology Kangra HIMACHAL PRADESH
Kangra
HIMACHAL PRADESH 
6283611796

bansal1531@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics committee DR RPGMC  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O048||(Induced) termination of pregnancywith other and unspecified complications,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  LETROZOLE VERSUS MIFEPRISTONE PRE-TREATMENT WITH MISOPROSTOL IN MEDICAL TERMINATION OF PREGNANCY ;A RANDOMIZED CONTROLLED TRIAL   Group 2 Fifty women randomized to group 2 will receive 200 mg of Mifepristone on day 1 under supervision. On 3rd day 800mcg Misoprostol will be kept vaginally by the investigator in the hospital. Patient will be kept under observation for 6 hours .Dose of 400 microgram Misoprostol will be kept vaginally if no symptoms of abortion occur after 4 hours. 
Intervention  LETROZOLE VERSUS MIFEPRISTONE PRE-TREATMENT WITH MISOPROSTOL IN MEDICAL TERMINATION OF PREGNANCY ;A RANDOMIZED CONTROLLED TRIAL The duration of the study will be 1 year  After assessment by senior consultant all women planned for medical termination of pregnancy will be counselled for recruitment in the study .They will be randomized on the basis of computer generated random number table to receive either of the two groups. Group 1 Fifty women will be randomized to this group. They will receive 10mg Letrozole on day 1 under supervision , 2nd and 3rd dose of 10mg Letrozole will be guided to be taken at home. On 3rd day 800mcg Misoprostol will be kept vaginally by the investigator in the hospital. Patient will be kept under observation for 6 hours . Dose of 400 microgram Misoprostol will be kept vaginally if no symptoms of abortion occur after 4 hours. Further dose of Misoprostol will be given only if required. Group 2 Fifty women randomized to group 2 will receive 200 mg of Mifepristone on day 1 under supervision. On 3rd day 800mcg Misoprostol will be kept vaginally by the investigator in the hospital. Patient will be kept under observation for 6 hours .Dose of 400 microgram Misoprostol will be kept vaginally if no symptoms of abortion occur after 4 hours. Duration of the study will be 1 year 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  40.00 Year(s)
Gender  Female 
Details  1. Women with age 18 to 40 years
2. Singleton pregnancy
3. Gestational age less than or equal to 9 weeks or 63 days of amenorrhea based on history, clinical examination, or ultrasonography if required
4. Patient requesting for mTOP and eligible for legal abortion according to the Termination of Pregnancy act. 
 
ExclusionCriteria 
Details  1.Inevitable or incomplete abortion

2.Suspected ectopic pregnancy

3.Anemia (Hemoglobin less than 8gm %)

4.Any history suggestive of drug allergy or allergy to mifepristone ,misoprostol or
letrozole drugs
5.Presence of maternal disease such as cardiovascular disease, liver failure , respiratory distress ,asthma , adrenal insufficiency, renal failure , history of thromboembolism and on anticoagulant therapy
6. Any history of joint pain and stiffness , osteoporosis . 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
To compare effectiveness of Letrozole versus Mifepristone pre-treatment with Misoprostol in medical termination of pregnancy of gestation equal to or less than 9 weeks   2 weeks 
 
Secondary Outcome  
Outcome  TimePoints 
Incomplete abortion
Yes
No
 
If sonography after 2 weeks suggests retained products or causes anemia  
Complete abortion
Yes
No 
Products of conception are seen grossly, progressive decrease in the bleeding, urinary pregnancy test will become negative after 2 weeks, confirmed on sonography  
Total no. Of misoprostol dose required  Given 4 hourly if signs of expulsion are not evident 
Need for incomplete evacuation
Yes
No 
If sonography after 2 weeks suggests retained products or causes anemia  
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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 3 
Date of First Enrollment (India)   15/08/2025 
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 Yet Recruiting 
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  

Induced abortions can be performed by medical and surgical methods.The standard of care for TOP has shifted from a predominantly surgical approach towards medical strategy. Medical termination of pregnancy has increased in popularity worldwide as it is non-invasive , there is avoidance of risks associated with surgery,  cost effective and with a high level of patient satisfaction. 

 

Various agents have been assessed in combination with misoprostol to improve success of mTOP including mifepristone, gemeprost  and tamoxifen .

In general mTOP involves using either a combined regimen consisting of mifepristone and misoprostol which is the current gold standard of care,  or a misoprostol-only regimen. WHO recommends the use of mifepristone for pre-misoprostol priming when mifepristone is available,  and an alternative of misoprostol-only when mifepristone is not accessible.  Compared with misoprostol alone,  pre-treatment with mifepristone followed by misoprostol has been shown to improve the success rate of complete abortion. 

 

Worldwide access to mifepristone,  despite being developed in 1980 , is limited and it is expensive .Hence there is an urgent unmet need for a cheaper and more readily available alternative.  Letrozole priming before mTOP has been proposed as an alternative to the use of mifepristone by who.

 

The successfull completion of this RCT may lead to the introduction of a more costeffective and easily accessible  mTOP service for patients,  as letrozole is cheaper and more widely available as compared to mifepristone .

 

 
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