Effect of Vitis Vinifera Seed Extract on Venous Reflux Time in Varicose Vein

Varicose Veins of Lower Limb Clinical Trial

— VICTORY  

Official title:

A Prospective, Open-label, Pragmatic Randomized Controlled Trial to Demonstrate the Effect of Improving the Venous Reflux Time by Vitis Vinifera Seed Extract in Patients With Varicose Vein of Lower Extremity

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05851183
• Other study ID #: VICTORY trial
• Status: Recruiting
• Phase: Phase 4
• Start date: July 20, 2023
• Est. completion date: April 25, 2025

Study information

• Verified date: April 2024
• Source: Yonsei University
• Contact: SungA Bae, MD, PhD
• Phone: 82-10-2327-3578
• Email: cardiobsa[@]yuhs.ac
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The number of patients with lower extremity varicose veins has been increasing due to an aging population, with treatments divided into conservative and invasive methods. Current treatments can be expensive and inaccessible for some patients. Entelon, a relatively inexpensive intravenous drug, has shown promise in improving symptoms related to venous lymphatic dysfunction, but its objective vascular function improvement hasn't been proven. This study aims to assess the effectiveness of Vitis Vinifera seed extract (Entelon®) combined with lifestyle therapy in patients with varicose veins, using follow-up Doppler ultrasonography to measure venous reflux improvement.

Description:

Varicose veins in the lower extremities are more than the function of the valve membranes on the inside of the legs, and the heart cannot function, resulting in regurgitation in the lower half of the body. This causes blood to pool in the lower extremities and causes various symptoms. Large stalks of superficial veins and venous valves of deep veins become dysfunctional, resulting in an increase in blood vessels in the calf area with backflow of blood. The valvular insufficiency of lower extremity veins is the main cause. In general, it occurs in the great saphenous vein that flows into the deep vein from the groin, the small saphenous vein in the posterior leg, and the perforating vein in the calf. Reflux in superficial veins (e.g. great saphenous vein, small saphenous vein) and deep veins can generally be confirmed using Doppler ultrasound. Determine the direction of treatment by confirming if there is branch vein dilatation. Ultrasonography is also done on the opposite, unaffected side, even if symptoms are in only one leg.

Treatment of varicose veins can generally be divided into conservative treatment and invasive treatment, and lifestyle correction and wearing compression stockings are recommended as conservative treatment. Surgical treatment is indicated when conservative treatment is ineffective or interferes with daily life. Symptoms can be alleviated by removing superficial veins with regurgitation due to valvular insufficiency, or by inducing hardening of the causative blood vessels using high frequency or laser to block regurgitation and prevent blood flow.

However, most of these treatments are non-salary items, and are relatively expensive treatment methods that impose a large financial burden on patients. In addition, deep veins are responsible for 90% of blood transport, but surgical treatment is impossible and only conservative treatment is possible.

As a non-invasive treatment, which is an intravenous active agent, is registered as a drug to be administered, and improvement of symptoms related to venous lymphatic dysfunction (pain, lower extremity anxiety symptoms) is attracting attention. It is relatively inexpensive compared to surgical treatment, but until now, objective improvement of vascular function by drug treatment has not been proven. Vitis Vinifera seed extract (Entelon®) was launched in 1998 and its safety has already been confirmed, and the investigators have investigated the effect of lower limit volume reduction compared to placebo after administration of Vitis Vinifera seed extract in patients with edema. (Sano A, Tokutake S, Seo A. Proanthocyanidin-rich grape seed extract reduces leg swelling in healthy women during prolonged sitting. J Sci Food Agric. 2013 Feb;93(3):457-62.).

In this study, along with lifestyle therapy in patients with varicose veins, follow-up Doppler ultrasonography after administration of Entelon will be used to confirm the improvement effect of venous reflux.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 200
• Est. completion date: April 25, 2025
• Est. primary completion date: January 25, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 19 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Adult males and females aged between 19 and under 80 years old

2. Patients with the following findings on venous Doppler ultrasound examination:

• Superficial veins (such as the great saphenous vein, small saphenous vein, etc.) showing valvular reflux for 0.5 seconds or longer

• Deep veins (such as the femoral vein, etc.) showing valvular reflux for 1 second or longer

3. Patients who have completed the washout period as described below by Visit 2, including the screening period:

• Analgesics, steroids, anti-inflammatory drugs, and venoactive medications (such as Entelon, etc.): at least 4 weeks

4. Patients who voluntarily provide written informed consent to participate in this clinical trial

Exclusion Criteria:

1. Peripheral arterial occlusive disease in the lower limbs

2. Asymptomatic lower extremity varicose veins

3. Acute deep vein thrombosis

4. Frequent lower limb pain due to neuropathy

5. Patients who have undergone or are scheduled for varicose vein procedures/surgeries (However, patients who have had a procedure or surgery more than 1 year prior to the screening date are eligible to participate)

6. Patients diagnosed with systemic diseases causing edema or thrombosis, such as heart failure, endocrine diseases (hypothyroidism, Cushing's syndrome, uncontrolled diabetes), allergic reactions to medications, urticaria and angioedema, malabsorption and protein-calorie malnutrition, obstructive sleep apnea, or thrombophilia, as determined by the investigator

7. History of malignancy within the past 5 years, but the following cases are eligible for clinical trial participation:

• Those who have a history within the past 5 years but maintain a cured state without recurrence or metastasis

• Those who have completed treatment for their tumor and have been disease-free for at least 5 years from the screening date

• Those who have passed at least 1 year since the screening date after complete resection of basal cell carcinoma/squamous cell carcinoma, radical resection of thyroid papillary cancer, or successful treatment of cervical intraepithelial neoplasia

8. Severe renal dysfunction (serum creatinine levels more than twice the normal upper limit of the institution) at the screening date

9. Severe liver dysfunction (ALT or AST levels more than three times the normal upper limit of the institution) at the screening date

10. Need to receive diuretics or contraindicated medications and therapies that may affect the results of this clinical trial during the study period (However, patients who have been taking antihypertensive medications (calcium channel blockers, beta-blockers, angiotensin-converting enzyme inhibitors, vasodilators, vasoconstrictors) at the same dosage for at least 4 weeks (28 days) before screening and will maintain the same dosage and administration during the study period are eligible to participate)

11. History of clinically significant psychiatric disorders or alcohol abuse

12. History of hypersensitivity reactions to the investigational drug or its ingredients

13. Those who have participated in or are scheduled to participate in other clinical trials (investigational drugs, medical devices, health functional foods) within 12 weeks from the screening date

14. Pregnant or breastfeeding women

15. Women of childbearing potential who plan to become pregnant during the clinical trial participation period

16. Individuals deemed unsuitable for participation in the clinical trial by the investigator

Related Conditions & MeSH terms

• Varicose Veins
• Varicose Veins of Lower Limb

Intervention

Drug:
• Vitis Vinifera seed extract medication plus therapeutic lifestyle change
Administer 150mg of Vitis Vinifera seed extract (Entelon®) orally twice a day

Behavioral:
• Therapeutic lifestyle change only
Implementing TLCs is a critical component of a comprehensive treatment plan for varicose veins. A key aspect of TLCs is the optimization of postural habits. Patients are advised to avoid extended sitting or standing periods, which exert additional pressure on the venous system in the lower extremities and exacerbate venous insufficiency. During rest periods, elevating the legs closer to the heart is recommended because this simple yet effective adjustment promotes venous return and reduces the gravitational burden on the venous valves of the legs. The use of graduated compression stockings during waking hours is another therapeutic lifestyle intervention that is often prescribed for patients with varicose veins. Additional TLCs include maintaining optimal body weight and engaging in regular physical exercise Walking or cycling are often recommended because of their effectiveness in promoting lower limb venous return.

Locations

Country	Name	City	State
Korea, Republic of	Yongin Severance Hospitall, Yonsei University College of Medicine	Yongin	Gyeonggi-do

Sponsors (1)

Lead Sponsor	Collaborator
Yonsei University

Country where clinical trial is conducted

Korea, Republic of, 

References & Publications (5)

AIUM Practice Parameter for the Performance of a Peripheral Venous Ultrasound Examination. J Ultrasound Med. 2020 May;39(5):E49-E56. doi: 10.1002/jum.15263. Epub 2020 Mar 12. No abstract available. — View Citation

De Maeseneer MG, Kakkos SK, Aherne T, Baekgaard N, Black S, Blomgren L, Giannoukas A, Gohel M, de Graaf R, Hamel-Desnos C, Jawien A, Jaworucka-Kaczorowska A, Lattimer CR, Mosti G, Noppeney T, van Rijn MJ, Stansby G, Esvs Guidelines Committee, Kolh P, Bastos Goncalves F, Chakfe N, Coscas R, de Borst GJ, Dias NV, Hinchliffe RJ, Koncar IB, Lindholt JS, Trimarchi S, Tulamo R, Twine CP, Vermassen F, Wanhainen A, Document Reviewers, Bjorck M, Labropoulos N, Lurie F, Mansilha A, Nyamekye IK, Ramirez Ortega M, Ulloa JH, Urbanek T, van Rij AM, Vuylsteke ME. Editor's Choice - European Society for Vascular Surgery (ESVS) 2022 Clinical Practice Guidelines on the Management of Chronic Venous Disease of the Lower Limbs. Eur J Vasc Endovasc Surg. 2022 Feb;63(2):184-267. doi: 10.1016/j.ejvs.2021.12.024. Epub 2022 Jan 11. No abstract available. Erratum In: Eur J Vasc Endovasc Surg. 2022 Aug-Sep;64(2-3):284-285. — View Citation

Gloviczki P, Lawrence PF, Wasan SM, Meissner MH, Almeida J, Brown KR, Bush RL, Di Iorio M, Fish J, Fukaya E, Gloviczki ML, Hingorani A, Jayaraj A, Kolluri R, Murad MH, Obi AT, Ozsvath KJ, Singh MJ, Vayuvegula S, Welch HJ. The 2022 Society for Vascular Surgery, American Venous Forum, and American Vein and Lymphatic Society clinical practice guidelines for the management of varicose veins of the lower extremities. Part I. Duplex Scanning and Treatment of Superficial Truncal Reflux: Endorsed by the Society for Vascular Medicine and the International Union of Phlebology. J Vasc Surg Venous Lymphat Disord. 2023 Mar;11(2):231-261.e6. doi: 10.1016/j.jvsv.2022.09.004. Epub 2022 Oct 12. Erratum In: J Vasc Surg Venous Lymphat Disord. 2024 Mar;12(2):101719. — View Citation

Labropoulos N, Leon LR Jr. Duplex evaluation of venous insufficiency. Semin Vasc Surg. 2005 Mar;18(1):5-9. doi: 10.1053/j.semvascsurg.2004.12.002. — View Citation

Labropoulos N, Tiongson J, Pryor L, Tassiopoulos AK, Kang SS, Ashraf Mansour M, Baker WH. Definition of venous reflux in lower-extremity veins. J Vasc Surg. 2003 Oct;38(4):793-8. doi: 10.1016/s0741-5214(03)00424-5. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in venous reflux time	The investigators will assess the changes in venous reflux time using lower limb venous Doppler ultrasound examinations. The examination will be performed by an independent assessor who is not aware of the group assignments to ensure unbiased assessment and measurement.	6, 12 weeks
Secondary	Improvement of venous reflux	The investigators will assess the improvement of venous reflux of target vessel (superficial vein < 0.5 seconds, deep vein < 1 seconds)	6, 12 weeks
Secondary	Change in varicose vein size area	The investigators will assess changes in varicose vein diameters using lower-limb venous Doppler ultrasound examinations	6, 12 weeks
Secondary	Change in venous reflux volume	The investigators will assess the changes in venous reflux volume using Venous Doppler Reflux VTI × varicose vein size area	6, 12 weeks
Secondary	Change of extracellular water ratio	The investigators will assess the changes in extracellular water (ECW) ratio (ECW/total body water) of target limb using body composition analyzer (ACCUNIQ BC720®).	6, 12 weeks
Secondary	Improvement in Venous Clinical Severity Score (VCSS)	The Venous Clinical Severity Score (VCSS) assesses the severity of chronic venous diseases. The score ranges from 0 (no symptoms) to 30 (severe venous disease). The scoring system considers various factors, including pain; varicose veins; venous edema; skin pigmentation; inflammation; induration; and active ulcers and their duration, size, and number. A higher VCSS indicates a worse outcome, implying a more severe state of venous disease.	6, 12 weeks
Secondary	Improvement of 14-item Chronic Venous Insufficiency quality of life Questionnaire (CIVIQ-14)	The Chronic Venous Insufficiency Quality of Life Questionnaire (CIVIQ-14) is a valuable tool designed to evaluate the impact of chronic venous insufficiency on quality of life. Improvement in the CIVIQ-14 refers to the enhancement in scores, indicating better management of symptoms, greater comfort, and overall well-being of the patient over the course of treatment or intervention.	6, 12 weeks