Protocol summary

Study aim
1. Determination of the effect of intravitreal injection of bevacizumab (Avastin) along with correction of vitamin D deficiency on central macular thickness in patients with diabetic macular edema and vitamin D deficiency; 2. Determination of the effect of intravitreal injection of bevacizumab (Avastin) with correction of vitamin D deficiency on corrected distance visual acuity (CDVA) in patients with diabetic macular edema and vitamin D deficiency; 3. Determining the relationship between vitamin D levels and the severity of macular edema
Design
Clinical trial with parallel and randomized groups & control group
Settings and conduct
The study will be performed in the retinal clinic of Labbafinejad Hospital in Tehran.Both groups receive 3 baseline IVB as a base, and oral vitamin D supplement is prescribed for correction of deficiency in group 2 by 50000 units/week for eight weeks. No blinding is designed.
Participants/Inclusion and exclusion criteria
Main inclusion criteria: Patients with type 2 diabetes mellitus and diabetic macular edema (DME) with greater central macular thickness of equal to and greater than 300 microns and corrected distance visual acuity of more than 0.1 LogMAR; Main exclusion criteria: Severe Vitamin D Deficiency (Less than 10 ng / ml), Taking vitamins Supplements upon entry
Intervention groups
Group 1 = Control Group = Deficient / Insufficient without Supplementation= with vitamin D deficiency and diabetic macular edema receiving IVB only; Group 2 = Deficient / Insufficient with Supplementation: With vitamin D deficiency and diabetic macular edema which will receive IVB and oral vitamin D supplementation (intervention)
Main outcome variables
Corrected distance visual acuity, central macular thickness, vitamin D level

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20200407046978N1
Registration date: 2020-04-11, 1399/01/23
Registration timing: prospective

Last update: 2020-04-11, 1399/01/23
Update count: 0
Registration date
2020-04-11, 1399/01/23
Registrant information
Name
Sepehr Roozdar
Name of organization / entity
Country
Iran (Islamic Republic of)
Phone
+98 21 2685 4764
Email address
roozdars@gmail.com
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2020-05-04, 1399/02/15
Expected recruitment end date
2020-06-04, 1399/03/15
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Effect of intravitreal bevacizumab (Avastin®) plus vitamin D supplementation on diabetic macular edema in vitamin D deficient patients
Public title
Evaluation of vitamin D effect on diabetic macular edema
Purpose
Treatment
Inclusion/Exclusion criteria
Inclusion criteria:
Patients with diabetes mellitus type 2 and diabetic macular edema Central macular thickness equal and greater than 300 micron Corrected distance visual acuity of greater than 0.1 LogMAR
Exclusion criteria:
History of any intraocular surgery (except uncomplicated cataract surgery which at least 6 months are passed) History of intravitreal injection of bevacizumab, other anti-VEGFs and steroid within 3 past months Epiretinal membrane or vitreomacular traction History of retinal vascular accidents History of uveitis Pregnant or breastfeeding women Using vitamin supplementation Not taking vitamin D supplementation based on the study protocol during follow up period Patients with severe vitamin D deficiency (<10 ng/ml) Macular disease and consequent visual impairment due to causes other than diabetic macular edema Hypercalcemia and hyperphosphatemia Serum creatinin > 3 mg/dl
Age
From 18 years old
Gender
Both
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size: 60
Randomization (investigator's opinion)
Randomized
Randomization description
Simple and individual randomization using tables of random numbers
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Parallel
Other design features

Secondary Ids

empty

Ethics committees

1

Ethics committee
Name of ethics committee
Ethics committiee of Shahid Beheshti University of Medical Sciences
Street address
7th Floor, Bldg No.2 SBUMS, Arabi Ave, Daneshjoo Blvd, Velenjak, Tehran, Iran
City
Tehran
Province
Tehran
Postal code
1983963113
Approval date
2018-08-06, 1397/05/15
Ethics committee reference number
IR.SBMU.MSP.REC.1397.553

Health conditions studied

1

Description of health condition studied
diabetic macular edema
ICD-10 code
E08.311
ICD-10 code description
Diabetes mellitus due to underlying condition with unspecified diabetic retinopathy with macular edema

Primary outcomes

1

Description
Change in central macular thickness in microns
Timepoint
Before treatment, 1 month, 3 months and 6 months after third baseline IVB
Method of measurement
Optical coherence tomography device

Secondary outcomes

empty

Intervention groups

1

Description
Control group: Patients with insufficient/ deficient leveLs of vitamin D and diabetic macular edema; Intervention: IVB
Category
Treatment - Drugs

2

Description
Intervention group: Patients with insufficient/deficient levels of vitamin D and diabetic macular edema; Intervention: IVB+Vitamin D oral supplementation
Category
Treatment - Drugs

Recruitment centers

1

Recruitment center
Name of recruitment center
Labbafinejad Hospital
Full name of responsible person
Sepehr Roozdar
Street address
Paydarfard st, 9th Boostan, Pasdaran Ave.
City
Tehran
Province
Tehran
Postal code
1666663111
Phone
+98 21 2360 2280
Email
roozdars@gmail.com

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
Shahid Beheshti University of Medical Sciences
Full name of responsible person
Afshin Zarghi
Street address
7th Floor, Bldg No.2 SBUMS, Arabi Ave, Daneshjoo Blvd, Velenjak, Tehran, Iran
City
Tehran
Province
Tehran
Postal code
1983963113
Phone
+98 21 2243 9770
Email
Intl_office@sbmu.ac.ir
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
No
Title of funding source
Shahid Beheshti University of Medical Sciences
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic

Person responsible for general inquiries

Contact
Name of organization / entity
Shahid Beheshti University of Medical Sciences
Full name of responsible person
Sepehr Roozdar
Position
Resident of Ophthalmology
Latest degree
Medical doctor
Other areas of specialty/work
Ophthalmology
Street address
No. 74, Darbandi St., Tajrish Sq.
City
Tehran
Province
Tehran
Postal code
1961936619
Phone
+98 21 2685 4764
Email
roozdars@gmail.com

Person responsible for scientific inquiries

Contact
Name of organization / entity
Shahid Beheshti University of Medical Sciences
Full name of responsible person
Sepehr Roozdar
Position
Resident of Ophthalmology
Latest degree
Medical doctor
Other areas of specialty/work
Ophthalmology
Street address
No. 74, Darbandi St., Tajrish Sq.
City
Tehran
Province
Tehran
Postal code
1961936619
Phone
+98 21 2685 4764
Email
roozdars@gmail.com

Person responsible for updating data

Contact
Name of organization / entity
Shahid Beheshti University of Medical Sciences
Full name of responsible person
Sepehr Roozdar
Position
Resident of Ophthalmology
Latest degree
Medical doctor
Other areas of specialty/work
Ophthalmology
Street address
No. 74, Darbandi St., Tajrish Sq.
City
Tehran
Province
Tehran
Postal code
1961936619
Phone
+98 21 2685 4764
Email
roozdars@gmail.com

Sharing plan

Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Not applicable
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available
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