# Robert D. Timmerman

Source: https://onco.cc/people/robert-timmerman/  
OnCo record `robert-timmerman` (Person). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Pioneer of stereotactic body radiotherapy, whose RTOG 0236 trial made SBRT the standard for inoperable early lung cancer.

## Summary

Robert Timmerman led the Indiana and RTOG 0236 trials that established stereotactic body radiotherapy as a curative option for medically inoperable stage I lung cancer, with local control above 90%. He defined the toxicity limits for central tumours and leads NRG trials of SBRT in operable patients and oligometastatic disease. His work made ablative radiotherapy a mainstream modality.

## Fields

- Kind: Person
- Last checked: 2026-09-10
- Tags: radiotherapy; sbrt; lung
- Role: Professor of Radiation Oncology, UT Southwestern Simmons Comprehensive Cancer Center
- Specialisms: Stereotactic body radiotherapy; Early-stage lung cancer; Oligometastatic disease

## Sources

- PubMed: https://pubmed.ncbi.nlm.nih.gov/?term=Timmerman%20RD%5BAuthor%5D%20stereotactic%20lung

## Connected records

- cancers: [Non-small-cell lung cancer](https://onco.cc/cancers/nsclc/)
- technologies: [SBRT / SABR (stereotactic radiotherapy)](https://onco.cc/technologies/sbrt/)
- institutions: [Harold C. Simmons Comprehensive Cancer Center, UT Southwestern](https://onco.cc/institutions/utsw-simmons/)

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