Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT05362500 |
Other study ID # |
CMHatd-ETH-22-derm-22 |
Secondary ID |
131/CPSP |
Status |
Completed |
Phase |
Phase 1
|
First received |
|
Last updated |
|
Start date |
June 1, 2021 |
Est. completion date |
November 30, 2021 |
Study information
Verified date |
April 2022 |
Source |
Combined Military Hospital Abbottabad |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
Melasma is an acquired skin disorder characterized by hyper-melanosis. Melasma is a term that
originates from the Greek root "melas" (black color) and was formerly known as chloasma.
Melasma is more common in sun-exposed tissues such as the cheeks, chin, upper lip, and
forehead. Melasma is a common dermatological disorder with a frequency of 8.8 percent in the
United States, but it can be as high as 40 percent amongst females. Melasma affects mostly
ladies and is most common throughout their reproductive years .
Melasma causes an increase in melanin pigment synthesis owing to a surge in the number of
melanosomes, which are membrane-bound cell organelles inside melanocytes where melanin
biosynthesis occurs and is transported to keratinocytes. Except in rare situations, the
number of melanocytes will not be enhanced. Melanocytes will grow in size, and dendrites will
become more visible. Despite the fact that the specific causation is unknown, some elements
are thought to have a role in the pathophysiological mechanisms of melasma). Among these, sun
exposure (UV light) is the most powerful primary trigger for its growth, which explains
melisma's propensity for certain areas of the body. Other major determinants include genetic
predisposition, and female hormones - both endogenous (that is, during pregnancy) and
exogenous (that is, during pregnancy) (contraceptives and hormone replacement therapy).
Thyroid problems, medications, and cosmetics can all be aggravating factors. Evaluation and
prevention of triggering variables are essential in order to avoid recurrence .
The peeling effect of glycolic acid is due to chemo exfoliation capabilities, that rely upon
aiding the elimination of keratinocytes, resulting in melanin reduction and speeding up the
regeneration of skin. TA suppresses UV-stimulated plasmin action in keratin cells by blocking
plasminogen appending to the keratin cells, resulting from lower free arachidonic acid levels
or to reduced capacity of prostaglandins production, which reduces melanocyte tyrosinase
activity .
The study's implications are to analyze the efficacy of these two drugs in order to assess
the better outcome of patients with evidence-based management.
Description:
A randomized controlled trial study (single-blind) was done In the Dermatology Unit of the
CMH, Abbottabad from June to November 2021 after Ethical Review Board approval, the 54
patients aged 20-50 years after informed consent were enrolled using a technique of
non-probability consecutive sampling. The sample size was determined using the WHO sample
size calculator, With a significance level of 95%, power of study 80%, the ratio of sample
size B: A of 1 and Assumed MASI score in Group A (Tranexamic Acid) Mean + SD = 9.37 ± 2.18,
in Group B (Glycolic Acid 70%) Mean + SD = 10.25 ± 2.93. Thus, the required sample size was
54 (27 in each group).
For randomization, the final recruited 54 participants (38 females, 16 males; aged 20-50
years), recruited into two groups i.e. Group A: contain 27 patients which had been treated
every 2 weeks for 12 weeks with 70% glycolic acid to assess chemical peeling and cold water
was used for washing to stop peeling as displayed and Group B: contain 27 patients treated
with an intradermal injection of 0.05 mL of tranexamic acid solution in normal saline (4
mg/mL) into the melasma lesion at 1 cm distance using a sterile insulin syringe, weekly for
12 weeks .