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Ocular Oncology and Treatments
Research Guide
What is Ocular Oncology and Treatments?
Ocular oncology and treatments is the medical field focused on the diagnosis, genetic analysis, and therapeutic management of eye cancers such as uveal melanoma, retinoblastoma, and ocular surface neoplasia, employing modalities like radiation therapy and intraocular chemotherapy.
This field encompasses 52,749 published works on research into genetic mutations, metastatic disease, prognostic factors, and tumor classification in ocular cancers. Retinoblastoma arises from two mutational events, with the inherited form involving one germline mutation and one somatic mutation, as detailed in 48 cases analyzed by Knudson (1971). Key studies identify RB1 gene alterations and interactions with viral oncoproteins as central to retinoblastoma pathogenesis.
Topic Hierarchy
Research Sub-Topics
Genetic Mutations in Uveal Melanoma
Researchers characterize GNAQ/GNA11, BAP1, SF3B1, and EIF1AX mutations using targeted sequencing and correlate mutational profiles with metastatic risk and survival. Functional studies elucidate oncogenic signaling pathways.
RB1 Mutations in Retinoblastoma
This sub-topic investigates germline and somatic RB1 inactivation mechanisms, genotype-phenotype correlations, and high-risk features like 13q deletions. Genetic counseling integrates array CGH and sequencing results.
Plaque Brachytherapy for Choroidal Melanoma
Studies report local control, visual acuity preservation, radiation retinopathy rates, and dosimetric optimization using Ruthenium-106 and Iodine-125 plaques. Collaborative Ocular Melanoma Study (COMS) data inform practice.
Intraocular Chemotherapy for Retinoblastoma
Research evaluates melphalan, topotecan, and carboplatin delivered via intravitreal or ophthalmic artery routes for vitreous seeds and recurrent disease. Toxicity profiles and globe salvage rates are primary endpoints.
Metastatic Uveal Melanoma Prognostic Factors
Investigations identify chromosomal aberrations (8p loss, 6p gain), gene expression class 1/2, and inflammatory markers predicting liver metastasis timing and survival. Clinical trials stratify by these biomarkers.
Why It Matters
Ocular oncology advances enable targeted interventions for retinoblastoma and uveal melanoma, critical due to their metastatic potential and vision-threatening nature. Knudson (1971) established the two-hit hypothesis for retinoblastoma from 48 cases, informing genetic screening and risk assessment in familial cases. Dyson et al. (1989) showed that human papillomavirus-16 E7 oncoprotein binds the retinoblastoma gene product p105-RB, linking viral mechanisms to tumor suppression loss and guiding antiviral strategies in ocular neoplasia. Friend et al. (1986) isolated a human DNA segment predisposing to retinoblastoma and osteosarcoma, enabling early molecular diagnosis. These findings support radiation therapy and intraocular chemotherapy, improving survival in early-stage disease while addressing prognostic factors like socioeconomic influences on melanoma outcomes (Chang et al., 1998).
Reading Guide
Where to Start
'Mutation and Cancer: Statistical Study of Retinoblastoma' by Knudson (1971), as it provides the foundational two-hit hypothesis from 48 cases, essential for understanding retinoblastoma genetics before advancing to molecular mechanisms.
Key Papers Explained
Knudson (1971) in 'Mutation and Cancer: Statistical Study of Retinoblastoma' establishes the two-mutation model, which Friend et al. (1986) build upon by isolating the predisposing RB1 DNA segment in 'A human DNA segment with properties of the gene that predisposes to retinoblastoma and osteosarcoma'. Cavenee et al. (1983) extend this in 'Expression of recessive alleles by chromosomal mechanisms in retinoblastoma' by detailing loss of heterozygosity mechanisms. Dyson et al. (1989) in 'The Human Papilloma Virus-16 E7 Oncoprotein Is Able to Bind to the Retinoblastoma Gene Product' reveal viral disruptions of p105-RB, while Jacks et al. (1992) validate in 'Effects of an Rb mutation in the mouse' and Sherr & McCormick (2002) integrate with p53 in 'The RB and p53 pathways in cancer'.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current research emphasizes genetic mutations in uveal melanoma, prognostic factors for metastatic disease, and refinements in radiation therapy and intraocular chemotherapy, as indicated by the field's keywords including choroidal melanoma and tumor classification.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Mutation and Cancer: Statistical Study of Retinoblastoma | 1971 | Proceedings of the Nat... | 7.5K | ✓ |
| 2 | Fluorescence-guided surgery with 5-aminolevulinic acid for res... | 2006 | The Lancet Oncology | 3.3K | ✕ |
| 3 | The Human Papilloma Virus-16 E7 Oncoprotein Is Able to Bind to... | 1989 | Science | 3.0K | ✕ |
| 4 | A human DNA segment with properties of the gene that predispos... | 1986 | Nature | 3.0K | ✓ |
| 5 | Tumors in Domestic Animals | 2016 | — | 2.2K | ✕ |
| 6 | Expression of recessive alleles by chromosomal mechanisms in r... | 1983 | Nature | 1.9K | ✕ |
| 7 | Effects of an Rb mutation in the mouse | 1992 | Nature | 1.8K | ✕ |
| 8 | The Molecular Genetics of Cancer | 1987 | Science | 1.7K | ✕ |
| 9 | The RB and p53 pathways in cancer | 2002 | Cancer Cell | 1.7K | ✓ |
| 10 | The National Cancer Data Base report on cutaneous and noncutan... | 1998 | Cancer | 1.6K | ✓ |
Frequently Asked Questions
What causes retinoblastoma according to genetic models?
Retinoblastoma results from two mutational events, with the dominantly inherited form featuring one inherited germline mutation and a second somatic mutation. This model derives from analysis of 48 cases and published reports. Knudson (1971) formalized this two-hit hypothesis in 'Mutation and Cancer: Statistical Study of Retinoblastoma'.
How does HPV-16 E7 interact with retinoblastoma gene product?
The human papilloma virus-16 E7 oncoprotein binds directly to the retinoblastoma gene product p105-RB, a feature common in tumors with RB1 deletions or mutations. This binding disrupts tumor suppression similar to adenovirus E1A interactions. Dyson et al. (1989) demonstrated this in 'The Human Papilloma Virus-16 E7 Oncoprotein Is Able to Bind to the Retinoblastoma Gene Product'.
What is the two-hit hypothesis in retinoblastoma?
The two-hit hypothesis posits that retinoblastoma requires mutations in both alleles of the RB1 gene, with recessive alleles expressed via chromosomal mechanisms like mitotic recombination. Cavenee et al. (1983) showed this in 'Expression of recessive alleles by chromosomal mechanisms in retinoblastoma'. It explains both hereditary and sporadic forms.
What prognostic factors affect melanoma survival?
Treatment of early-stage cutaneous and noncutaneous melanoma yields excellent outcomes, with conventional factors plus socioeconomic variables linked to survival. The National Cancer Data Base analyzed these patterns. Chang et al. (1998) reported this in 'The National Cancer Data Base report on cutaneous and noncutaneous melanoma'.
How do RB and p53 pathways relate to ocular cancers?
The RB and p53 pathways regulate cell cycle and apoptosis, with disruptions common in cancers including retinoblastoma. Sherr and McCormick (2002) outlined their interactions in 'The RB and p53 pathways in cancer'. Mutations in these pathways drive tumorigenesis in ocular malignancies.
What DNA segment predisposes to retinoblastoma?
A specific human DNA segment exhibits properties of the gene predisposing to retinoblastoma and osteosarcoma. Friend et al. (1986) identified it in 'A human DNA segment with properties of the gene that predisposes to retinoblastoma and osteosarcoma'. This discovery advanced RB1 gene cloning.
Open Research Questions
- ? How do specific chromosomal mechanisms beyond mitotic recombination activate recessive alleles in sporadic retinoblastoma?
- ? What are the precise biochemical consequences of p105-RB binding by diverse viral oncoproteins in ocular tumor cells?
- ? In what ways do Rb mutations in mouse models recapitulate human retinoblastoma progression and metastasis?
- ? How do socioeconomic factors quantitatively influence treatment outcomes in noncutaneous ocular melanomas?
- ? What novel genetic mutations beyond RB1 drive uveal melanoma metastatic disease?
Recent Trends
The field maintains 52,749 works with sustained focus on uveal melanoma, retinoblastoma, genetic mutations, radiation therapy, and intraocular chemotherapy, as per keyword trends.
No growth rate data available over 5 years.
No recent preprints or news in the last 12 months provided.
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