What are the best treatments for Retinoblastoma?

TL;DR: Treatment for retinoblastoma is highly personalized, focusing on the dual goals of saving the child's life and preserving vision whenever possible. Current standard-of-care includes a combination of targeted focal therapies, systemic chemotherapy, and, in advanced cases, surgical intervention or external beam radiation.

What are the primary treatments used for retinoblastoma?

The management of retinoblastoma has evolved significantly, moving away from aggressive surgery toward eye-sparing techniques. The choice of treatment depends on the size, location, and laterality (one or both eyes) of the tumor. First-line therapies often involve systemic chemotherapy—frequently referred to as "chemoreduction"—to shrink the tumor before applying focal treatments. Focal therapies, which directly target the tumor, include laser photocoagulation, cryotherapy (freezing), or thermotherapy. In recent years, intra-arterial chemotherapy (delivering medication directly to the ophthalmic artery) has become a revolutionary approach for retinoblastoma, allowing for higher local drug concentrations while minimizing systemic side effects.

What medications and surgical procedures are involved in care?

Treatment protocols for retinoblastoma are strictly individualized based on clinical staging. Common approaches and medications include:

• Systemic Chemotherapy: Typically involves a combination of carboplatin, etoposide, and vincristine (Oncovin).


• Intra-arterial Chemotherapy (IAC): Uses melphalan (Alkeran) or topotecan (Hycamtin) delivered directly to the eye.


• Intravitreal Chemotherapy: Direct injection of melphalan into the vitreous humor to treat tumor seeds.


• Enucleation: Surgical removal of the eye, which remains a life-saving procedure for advanced retinoblastoma cases where the tumor is too large or vision cannot be salvaged.


• External Beam Radiation: Now used less frequently due to the risk of secondary malignancies, particularly in patients with germline RB1 mutations.

Which specialists should be on the retinoblastoma care team?

Because retinoblastoma is a complex, systemic condition, it requires a multidisciplinary medical team to ensure the best outcomes. A standard care team typically includes a pediatric ocular oncologist, a radiation oncologist, a pediatric oncologist, and a geneticist. Genetic counseling is vital, as approximately 40% of retinoblastoma cases are hereditary, caused by a mutation in the RB1 gene. Psychological support is also a critical component of the care team, helping families navigate the emotional weight of a cancer diagnosis in childhood.

What does the latest research suggest for the future of treatment?

Medical researchers are currently investigating novel delivery methods and targeted molecular therapies. Clinical trials are exploring the use of sub-tenon injections and new chemotherapeutic agents that may be more effective against resistant retinoblastoma tumor cells. Additionally, liquid biopsy techniques and advanced genomic sequencing are being integrated into clinical practice to better predict treatment response and identify early signs of recurrence.

Next steps

• Consult with a specialized pediatric ocular oncology center to discuss the specific staging of the condition.


• Request genetic testing and counseling to determine if the retinoblastoma is hereditary, as this influences long-term screening for the patient and family members.


• Connect with the 8 members of the DiseaseMaps.org community who have experience with this diagnosis to share support and resources.


• Ensure your child has regular follow-up examinations under anesthesia (EUA) as scheduled by your medical team to monitor for tumor regression or recurrence.

Medical disclaimer: This information is for educational purposes only and does not constitute medical advice; please consult with a qualified pediatric oncologist to determine the appropriate treatment plan for your specific case.

References

• NIH GARD: https://rarediseases.info.nih.gov/diseases/7568/retinoblastoma


• Orphanet: https://www.orpha.net/en/disease/detail/791


• American Academy of Ophthalmology: https://www.aao.org/eye-health/diseases/what-is-retinoblastoma


• OMIM (Online Mendelian Inheritance in Man): https://omim.org/entry/180200