ClinicalTrials.gg
CompletedNCT01766310Updated Dec 11, 2015Results posted

Effect of Folic Acid Supplementation on Plasma Homocysteine Level in Obese Children

A Phase 4 interventional study of Folic Acid and placebo in Hyperhomocysteinemia and Obesity, sponsored by Queen Sirikit National Institute of Child Health. Completed at 2 sites in Thailand. Open to participants aged 9 Years to 18 Years. Per ClinicalTrials.gov, last updated 2015-12-11.

Sponsored by Queen Sirikit National Institute of Child Health · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
9 Years to 18 Years
Sex
All
01

Study summary

The purpose of the present study was to determine whether folic acid supplementation could reduce plasma homocysteine in obese children and to determine the association between dietary folate, serum folate and homocysteine level through the randomized double blinded placebo controlled trial.

Read the detailed description

Atherosclerosis is common \& remains a significant clinical problem because of leading to myocardial infarction, stroke and cardiovascular death. Many studies founded hyperhomocysteinemia is an independent risk factor for those cardiovascular diseases which take responsible for about 10% of total cardiovascular disease risk. Reduction of elevated plasma homocysteine may prevent up to 25% of cardiovascular events. One of modifiable cause of hyperhomocysteinemia is prevention of vitamin deficiency, especially folate deficiency.

Obese Thai children are probable risk for folate deficiency due to low dietary folate intake and low serum folate level from unbalanced diet (low vegetables intake \& high fat diet) and high prevalence of thalassemia. Moreover obese children are also at risk of atherosclerosis. However, no data have been reported about effect of folic acid supplementation on homocysteine level in these patients.

02

Conditions studied

  • Hyperhomocysteinemia
  • Obesity

Keywords

  • Folic acid
  • Folate
  • Homocysteine
  • Obese
  • Children
03

In context

Hyperhomocysteinemia

34 studies on the registry are indexed under Hyperhomocysteinemia; 4 are open to participants now.

This study's enrollment of 50 is below the median of 84 across 21 interventional studies indexed under Hyperhomocysteinemia.

Browse Hyperhomocysteinemia studies →

Lead sponsor

Queen Sirikit National Institute of Child Health is the lead sponsor of 7 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
9 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient age between 9-18 years
  • Diagnosed obesity ( more than median plus two of standard deviation for age and sex according to WHO reference 2007)

Exclusion criteria

Exclusion Criteria:

  • Secondary obesity
  • Thalassemia disease
  • Renal and hepatic dysfunction
  • Drugs: anticonvulsant, estrogen, thiazides, metformin, cholestyramine, methotrexate, fibrates, nicotinic acid
  • Previous vitamin supplementation 1 month before study
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
50 participants (actual)

Study arms

  • Placebo comparator
    placebo

    placebo tablet in the same appearance and taste with folic acid orally once a day for 8 weeks of the study

    Drug: placebo

  • Experimental
    folic acid

    Folic acid tablet 5mg per day orally (5mg/tablet) once a day for 8 weeks of the study

    Drug: Folic Acid

Interventions

  • yellow tablet contained 5mg of folic acid, manufactured from the Government Pharmaceutical Organization, Ministry of Public Health, Thailand

  • Drugplacebo

    sugar tablet manufactured to mimic folic acid tablet

06

What researchers measure

Primary outcomes

  1. Changes of Homocysteine Level

    Mean difference of changes of homocysteine level between 2 treatment groups

    Time frame: 8 weeks

Secondary outcomes

  1. Serum Folate Level

    correlation between serum folate and plasma homocysteine level

    Time frame: 8 weeks

  2. Serum Vitamin B12 Level

    correlation between serum vitamin B12 and plasma homocysteine level

    Time frame: 8 weeks

Other outcomes

  1. Prevalence of Hyperhomocysteinemia

    prevalence of hyperhomocysteinemia in Thai obese children

    Time frame: 8 weeks

07

Results

Posted Nov 16, 2015

Participant flow

Participant flow — Overall Study
MilestonePlaceboFolic Acid
Started2426
Completed2323
Not completed13
Withdrew: Lost to follow-up13

Outcome measures

PrimaryChanges of Homocysteine Level

Mean difference of changes of homocysteine level between 2 treatment groups

Time frame:
8 weeks
Reported as:
Mean · µmol/L
Changes of Homocysteine Level
µmol/LPlaceboFolic Acid
Changes of Homocysteine Level-0.68 ± 1.25-1.35 ± 1.32
Statistical analysis
  • Placebo vs Folic Acid · t-test, 2 sided · p = 0.05 · Mean difference (net): 0.68 · 95% CI -0.09 to 1.44
SecondarySerum Folate Level

correlation between serum folate and plasma homocysteine level

Time frame:
8 weeks

Results for this outcome have not been posted.

SecondarySerum Vitamin B12 Level

correlation between serum vitamin B12 and plasma homocysteine level

Time frame:
8 weeks

Results for this outcome have not been posted.

Other pre-specifiedPrevalence of Hyperhomocysteinemia

prevalence of hyperhomocysteinemia in Thai obese children

Time frame:
8 weeks
Reported as:
Number · participants
Prevalence of Hyperhomocysteinemia
participantsPlaceboFolic Acid
Prevalence of Hyperhomocysteinemia32

Adverse events

Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Placebo—0/24 (0%)0/24 (0%)
Folic Acid—0/26 (0%)0/26 (0%)

Baseline characteristics

mean and SD

Age, Continuous
Age, Continuous(years)PlaceboFolic AcidTotal
Mean10.73 ± 1.6411.08 ± 1.5710.90 ± 1.60
Sex: Female, Male
Sex: Female, Male(Participants)PlaceboFolic AcidTotal
Female91019
Male151631
08

Study locations

2 sites
  • Department of Pediatrics, Queen Sirikit National Institute of Child Health
    Bangkok, 10400, Thailand
  • Queen Sirikit National Institute of Child Health
    Bangkok, 10400, Thailand
09

References and documents

Publications

  • Solini A, Santini E, Ferrannini E. Effect of short-term folic acid supplementation on insulin sensitivity and inflammatory markers in overweight subjects. Int J Obes (Lond). 2006 Aug;30(8):1197-202. doi: 10.1038/sj.ijo.0803265. Epub 2006 Feb 21. PubMed 16491109 ↗
  • Papandreou D, Malindretos P, Arvanitidou M, Makedou A, Rousso I. Oral supplementation of folic acid for two months reduces total serum homocysteine levels in hyperhomocysteinemic Greek children. Hippokratia. 2010 Apr;14(2):105-8. PubMed 20596265 ↗
  • Papandreou D, Malindretos P, Arvanitidou M, Makedou A, Rousso I. Homocysteine lowering with folic acid supplements in children: effects on blood pressure. Int J Food Sci Nutr. 2010 Feb;61(1):11-7. doi: 10.3109/09637480903286371. PubMed 19939196 ↗
  • Pena AS, Wiltshire E, Gent R, Hirte C, Couper J. Folic acid improves endothelial function in children and adolescents with type 1 diabetes. J Pediatr. 2004 Apr;144(4):500-4. doi: 10.1016/j.jpeds.2003.12.049. PubMed 15069400 ↗
  • Gargari BP, Aghamohammadi V, Aliasgharzadeh A. Effect of folic acid supplementation on biochemical indices in overweight and obese men with type 2 diabetes. Diabetes Res Clin Pract. 2011 Oct;94(1):33-8. doi: 10.1016/j.diabres.2011.07.003. Epub 2011 Jul 28. PubMed 21802161 ↗
  • Iamopas O, Ratanachu-ek S, Chomtho S. Effect of folic acid supplementation on plasma homocysteine in obese children: a randomized, double-blind, placebo-controlled trial. J Med Assoc Thai. 2014 Jun;97 Suppl 6:S195-204. PubMed 25391194 ↗
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2012, a primary completion of Mar 2013 and a completion of Mar 2013. It does not say whether these dates are actual or estimated.

Results were first posted in Nov 2015, 2 years 8 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 7, 2013
First posted
Jan 11, 2013
Start
Dec 2012
Primary completionActual
Mar 2013
CompletionActual
Mar 2013
Results first posted
Nov 16, 2015
Last update
Dec 11, 2015
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 11, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01766310
Lead sponsor
Queen Sirikit National Institute of Child Health
Responsible party
Pavinee Intakorn (Queen Sirikit National Institute of Child Health, Queen Sirikit National Institute of Child Health) — Principal investigator
First posted
Jan 11, 2013
Start date
Dec 2012
Primary completion
Mar 2013
Completion
Mar 2013
Results posted
Nov 16, 2015
Last update
Dec 11, 2015

Study contacts

Orawan Iamopas, MD.
principal investigator · Queen Sirikit National Institute of Child Health

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Nov 2015. You cannot join it, but the record below documents what was studied.

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