RGX-314 (Subretinal / Suprachoroidal)

RGX-314 is an investigational gene therapy being studied for the treatment of certain eye conditions like Wet AMD and diabetic retinopathy, by helping the eye produce its own medicine continuously.

Drug class	Gene Therapy
Type	Single
Forms	Subretinal / Suprachoroidal
Common strength	Per dose
Prescription status	Investigational

What RGX-314 is used for

RGX-314 is an investigational medicine, meaning it is currently being studied in clinical trials and is not yet routinely available. It is being explored as a treatment for certain serious eye conditions that can lead to vision loss. These conditions include:

• Wet Age-related Macular Degeneration (Wet AMD): This is a common eye condition that affects the macula, the central part of your retina responsible for sharp, detailed vision. In Wet AMD, abnormal blood vessels grow under the retina and leak fluid or blood, causing damage to the macula and leading to blurred vision or a blind spot in your central vision.
• Diabetic Retinopathy: This condition affects people with diabetes. High blood sugar levels can damage the blood vessels in the retina. In advanced stages, new, abnormal blood vessels can grow on the surface of the retina, which can bleed or cause scar tissue, leading to severe vision loss or even blindness.

It is important to remember that RGX-314 is still under investigation for these uses.

How it works

RGX-314 is a type of medicine called gene therapy. Our bodies naturally produce many substances, and gene therapy works by introducing new genetic material into the body’s cells to help them produce a specific protein or substance that is needed. In the case of RGX-314, it works by delivering genes into the cells of the eye. These genes then instruct the eye’s own cells to continuously produce a protein that acts like an ‘anti-VEGF’ medicine.

VEGF (Vascular Endothelial Growth Factor) is a protein in the body that can cause abnormal blood vessels to grow and leak in the eye, which is a key problem in conditions like Wet AMD and diabetic retinopathy. By continuously producing its own anti-VEGF, the eye can potentially reduce the growth and leakage of these abnormal blood vessels, helping to preserve vision and manage the disease.

This mechanism is designed to provide a sustained therapeutic effect, potentially reducing the need for frequent injections of anti-VEGF medicines that are currently used to treat these conditions.

How it’s used

RGX-314 is an investigational medicine and its administration is part of clinical trials. Based on current studies, it is designed for a one-time administration. This means that unlike some eye treatments that require repeated doses, RGX-314 is intended to be given only once.

The medicine is administered directly into the eye, either through a subretinal or suprachoroidal approach. These are specialized procedures performed by ophthalmologists in a hospital or clinic setting. It is not an eye drop or an ointment that you would apply yourself at home. The exact procedure and what to expect would be thoroughly explained by the specialist doctor if you were participating in a clinical trial involving this medicine.

Because it is an investigational treatment, its use is strictly controlled within clinical trial protocols, and it is not available for general prescription or self-use.

Always follow your ophthalmologist’s exact instructions.

Brands in India

Hospital-prepared or not marketed as a retail brand in India.

Precautions & side effects

As RGX-314 is an investigational medicine, specific precautions are being carefully evaluated during clinical trials. However, some general warnings apply to all prescription eye medicines and especially to novel therapies like gene therapy:

• Investigational Status: RGX-314 is not yet approved or routinely available. Its safety and effectiveness are still being studied.
• Specialist Administration: This medicine is given only by specialists in a hospital or clinic setting and is never for self-use.
• Prescription Only: Like all potent eye medicines, RGX-314 would only be used under the direct supervision and prescription of a qualified ophthalmologist.
• Not for Self-Medication: Do not attempt to self-medicate or reuse an old prescription, especially with an investigational medicine.
• General Medical Advice: This page is for general education and is not a substitute for professional medical advice, diagnosis, or a prescription. Always discuss your specific condition and treatment options with your doctor.
• Availability in India: RGX-314 is not currently approved or routinely available in India. If you are interested in advanced treatments, please ask your ophthalmologist about approved alternatives available in India.

Understanding Eye Conditions: Wet AMD and Diabetic Retinopathy

Our eyes are precious, and conditions like Wet Age-related Macular Degeneration (Wet AMD) and Diabetic Retinopathy can significantly impact our vision and quality of life. Understanding these conditions is the first step towards managing them effectively.

Wet Age-related Macular Degeneration (Wet AMD): The macula is a small but vital part of your retina, located at the back of your eye. It’s responsible for your sharp, central vision, allowing you to read, recognise faces, and see fine details. In Wet AMD, abnormal blood vessels grow underneath the macula. These vessels are fragile and can leak fluid or blood, damaging the macula. This damage leads to blurred central vision, distorted vision (straight lines appearing wavy), or even a blind spot in the centre of your vision. Wet AMD progresses rapidly and can cause severe vision loss if not treated promptly. Regular eye check-ups, especially if you are over 50 or have a family history of AMD, are crucial for early detection.

Diabetic Retinopathy: This condition affects individuals with diabetes. High blood sugar levels over time can damage the tiny blood vessels in the retina. Initially, you might not notice any symptoms. However, as the condition progresses, these damaged vessels can leak fluid or blood, leading to swelling of the macula (diabetic macular edema) or the growth of new, abnormal blood vessels (proliferative diabetic retinopathy). These new vessels are very fragile and can bleed into the vitreous (the clear jelly that fills your eye), causing sudden severe vision loss. They can also form scar tissue, which can pull on the retina and lead to retinal detachment. Managing your blood sugar, blood pressure, and cholesterol levels is vital in preventing and slowing the progression of diabetic retinopathy. Regular dilated eye exams are essential for all individuals with diabetes.

General Advice for Eye Medicine Use, Hygiene, and Storage

While RGX-314 is administered by specialists, many eye conditions require regular use of eye drops or ointments. Here’s some general advice that applies to most eye medicines:

Correct Instillation of Eye Drops:

1. Wash Your Hands: Always wash your hands thoroughly with soap and water before touching your eyes or eye medicine.
2. Check the Bottle: Ensure the bottle is not expired and the tip is clean. Do not let the tip touch your eye or any other surface.
3. Tilt Your Head: Tilt your head back slightly and pull your lower eyelid down to create a small pocket.
4. Administer the Drop: Hold the bottle upside down with your other hand, directly over your eye. Squeeze gently to release one drop into the pocket.
5. Close Your Eye: Gently close your eye for a minute or two. Avoid blinking or squeezing your eye shut, as this can push the medicine out.
6. Clean Up: Blot any excess liquid around your eye with a clean tissue.
7. Wash Hands Again: Wash your hands after instilling the drops.

Applying Eye Ointment:

1. Follow steps 1-3 for eye drops.
2. Squeeze a small ribbon of ointment (about 1 cm) into the pocket of your lower eyelid.
3. Close your eye and roll your eyeball gently to spread the ointment. Your vision might be blurry for a few minutes.
4. Follow steps 6-7.

Hygiene and Storage:

• Do Not Share: Never share your eye medicines with anyone else, even if they have similar symptoms.
• Keep Clean: Always keep the cap on the bottle or tube when not in use.
• Store Correctly: Store your eye medicines as directed on the packaging. Some may need refrigeration, while others are fine at room temperature. Keep them out of reach of children.
• Discard After Use: Discard any leftover medicine after the prescribed treatment duration or expiry date.

When to Seek Medical Help

Your vision is precious, and it’s important to know when to consult your ophthalmologist. While regular follow-ups are crucial for managing existing eye conditions, seek immediate medical attention if you experience any of the following:

• Sudden decrease or loss of vision.
• Sudden onset of flashes of light or new floaters (small spots or lines that drift across your vision).
• Eye pain that is severe or persistent.
• Redness, swelling, or discharge from the eye that worsens or doesn’t improve.
• New or worsening distortion of vision (e.g., straight lines appearing wavy).
• Any new or unusual symptoms after using eye medicine.

Always follow your ophthalmologist’s advice regarding your specific condition and treatment plan. They are the best resource for managing your eye health.

Frequently asked questions

What is RGX-314 used for?

RGX-314 is an investigational gene therapy being studied for the treatment of certain serious eye conditions like Wet Age-related Macular Degeneration (Wet AMD) and diabetic retinopathy. It is not yet routinely available.

How does RGX-314 work?

RGX-314 is a gene therapy that works by helping the eye's own cells continuously produce a protein that acts like an 'anti-VEGF' medicine. This helps to reduce the growth and leakage of abnormal blood vessels in the eye, which are key problems in conditions like Wet AMD and diabetic retinopathy.

What are the common Indian brands for RGX-314?

RGX-314 is an investigational medicine and does not have any retail brands currently available in India. It is still under clinical investigation.

How is RGX-314 used or administered?

RGX-314 is designed for a one-time administration directly into the eye, either subretinally or suprachoroidally. This is a specialized procedure performed by ophthalmologists in a hospital or clinic setting and is never for self-use.

Is a prescription needed for RGX-314?

Yes, if RGX-314 were to become available, it would be a prescription-only medicine given by specialists. As an investigational medicine, its use is currently restricted to clinical trials under strict medical supervision.

What are the key precautions to take with RGX-314?

The key precautions are that RGX-314 is an investigational medicine, not yet approved or routinely available in India. It must only be administered by specialists in a hospital or clinic setting and is never for self-use. Always follow the directions of a qualified ophthalmologist, and this information is not a substitute for professional medical advice.

References

1. Diabetic Retinopathy – National Eye Institute
2. Eye health – MedlinePlus (US National Library of Medicine)
3. Eye health information – American Academy of Ophthalmology
4. Blindness and vision impairment – World Health Organization
5. StatPearls – NCBI Bookshelf

---

Medically reviewed by Dr. C Jagadesh Reddy, Chief Surgeon: Cornea, Cataract and Refractive Surgery — last reviewed 2026-07-28.

This page is for general education only and is not a substitute for professional medical advice, diagnosis or treatment. Never self-medicate or reuse an old prescription. Always consult a qualified ophthalmologist before starting, changing or stopping any eye medicine.