Medical Oncology
Physician insights on cancer treatment protocols, immunotherapy, targeted therapies, and clinical trial updates.
Recent Discussions
How does data from the HIMALAYA trial impact your first line treatment selection for advanced HCC?
The results from the HIMALAYA trial with the combination tremelimumab (CTLA-4 inhibitor) and durvalumab (PD-L1 inhibitor) reported an OS of 16.4 months compared to 13.8 months for sorafenib which was statistically significant (HR 0.78, p-value of 0.0035). With the limited data presented at ASCO GI 2...
What would you use as adjuvant endocrine therapy for a patient who developed an invasive, hormone receptor positive breast cancer while on raloxifene for almost a decade prior?
In this situation I would use an aromatase inhibitor if possible. One would not expect an ESR1 activating mutation to be readily detected after treatment with a SERM, since estrogen deprivation rather than receptor blockade enriches for ESR1 mutant clones.
Is it acceptable to treat patients with limited, asymptomatic brain metastases and EGFR-mutant NSCLC with upfront TKI?
Though some clinicians have been exploring the idea of targeted therapy for EGFR mutant brain metastases, this has been done in the absence of strong evidence. Reasons for pushing this idea are that sometimes the lesions seem to respond, and this has been seen in some single arm studies and anecdota...
For a patient with metastatic colon cancer who tested positive for MSI (i.e. MLH1 hypermethylation etc) and BRAF mutation, what would be your preferred choice in the second line setting?
Approximately 15% of colorectal carcinomas demonstrate mismatch repair deficiency. The majority of these are MLH1/PMS2 deficient due to MLH1 promoter hypermethylation (MLH1ph). BRAF V600E mutations occur in approximately 50% of colorectal carcinomas with MLH1ph. The role of immunotherapy in patients...
Should we be stopping new starts of patients who can be triaged for 2-3 months like prostate cancers on ADT when significant community spread of COVID-19 is detectable in our area?
I would for those patients requiring ADT, which is the way I interpreted the question. I want to elaborate more because @Dr. First Last brought up other scenarios we should consider and he brings some more good points: Many patients could get active surveillance for a period of time before ADT is co...
How do you present the trade off between a small chance of a sustained response for a new drug at the expense of potential worsening quality of life?
Since we now have an increasing number of treatments at our disposal, this becomes an ever more frequent conversation in oncology. This question gets at several Shared Decision Making (SDM) model steps. Usually in this scenario, there are not routine standard of care options and highlighting the pat...
How do you choose which LHRH agonist or antagonist to prescribe for ADT in patients with prostate cancer?
The choice of LHRH agonist or antagonist depends on patient factors. Most patients receive some form of leuprolide or goserelin since these allow longer intervals between injections (as compared to degarelix). Goserelin is used more for those on anticoagulation or with bleeding disorders since it is...
Has precision medicine changed how you consent patients for treatment?
The use of precision oncology technology and genetics has changed the ability to provide informed consent. In general, the riskier or less standard of care a therapeutic intervention might be, the greater the need for informed consent. In this way, precision oncology has pushed the envelope especial...
How do you choose among the available PD-1/PDL-1 inhibitors approved for metastatic bladder cancer?
This is an evolving field. While the thought had been all the drugs were likely equivalent in efficacy (with no head to head trials) this has changed in the past week. Roche had a press release in which they announced the Phase III IMvigor211 study that evaluated atezolizumab in people with locally ...
Would you consider stopping nivo/ipi combination after a CR in a patient with metastatic melanoma?
Indirect data indeed suggest we can extrapolate the data on durable complete response after discontinuation of pemrolizumab. Indeed, most patients in complete response who stopped ipi/nivo combination for toxicity or any other reason in Checkmate 067 and 069 had durable ongoing complete response. Af...