Two people can have the same type of cancer and respond to the same treatment in completely different ways. For years, that was one of the most frustrating parts of cancer care. Today, precision oncology is changing that.
At Immunotherapy Institute, personalized treatment is at the center of everything we do. No two patients receive the same generic protocol. In this guide, we explain what precision oncology is, how it works, and how patients from the US and Canada access it at our clinic in Tijuana, just 20 minutes from San Diego.
What Is Precision Oncology?
Precision oncology is a way of treating cancer based on the unique features of each patient's tumor. The National Cancer Institute defines precision medicine as care in which prevention, diagnosis and treatment are tailored to the genes, proteins and other substances in your body.
In simple terms, instead of asking only "Where is the cancer?" we also ask "What is driving this cancer?" The answer helps us choose treatments that are more likely to work and avoid the ones that probably won't.
How Precision Oncology Works
Step 1: Biomarker Testing
It starts with testing. Biomarker testing, also called tumor profiling or genomic testing, looks for genes, proteins and other markers in cancer cells. Doctors usually test a tissue sample from a biopsy, and sometimes a blood sample.
These markers tell us a lot. Some show that a tumor is likely to respond to a certain targeted drug. Others suggest the cancer may respond well to immunotherapy.
Step 2: Matching Treatment to Your Tumor
Once we understand your tumor's profile, our oncologist matches it with the therapies most likely to help. According to the NCI, some targeted therapies and immunotherapies only work for people whose cancers have certain biomarkers. Testing first means less trial and error.
Step 3: Looking at the Whole Patient
Your tumor is only part of the picture. We also look at your immune function, inflammation, nutrition and overall health through our integrative assessment. This includes epigenetic testing when it can guide your plan.
Step 4: Monitoring and Adjusting
Cancer can change over time. We track how your body responds and adjust treatment when needed. After treatment ends, our follow-up program continues monitoring for up to three years.
Benefits of Personalized Cancer Treatment
- Treatments chosen for your tumor: therapies are selected based on what drives your specific cancer.
- Fewer unnecessary side effects: avoiding treatments unlikely to work spares your body.
- More options: testing may reveal therapies you had not been offered before.
- Better use of time: for many patients, time matters. A focused plan avoids months of trial and error.
Precision oncology does not guarantee a result, and not every tumor has a known target. But it gives patients and doctors much more information to make strong decisions.
Precision Oncology and Immunotherapy
Precision oncology and immunotherapy work hand in hand. At our clinic, personalization goes beyond selecting a drug. With autologous immunotherapy, we use your own immune cells. We multiply them by the billions and train them to recognize what your tumor looks like. Treatment does not get more personal than that.
We also offer targeted pharmacological immunotherapy, including checkpoint inhibitors, monoclonal antibodies and targeted agents, and CAR T-cell therapy for selected cases. If you are comparing options, our guide to immunotherapy vs chemotherapy is a helpful place to start.
Why Patients Travel to Mexico for Precision Oncology
Many patients come to us after hearing that they have "no more options" or after waiting weeks for approvals. Medical travel to Mexico has become a practical choice for people who want faster access to personalized care.
Faster Access to Treatment
In many systems, patients wait for insurance approvals, specialist appointments and treatment slots. At our clinic, treatment often begins within two weeks of the first consultation.
Lower Cost
Our programs cost an average of 70% below comparable care in the US. We provide HSA/FSA-compatible invoicing and offer a financial aid program for qualifying patients.
A Team Focused on You
We limit the number of patients we accept so each person gets real attention. A board-certified oncologist oversees every plan, supported by integrative and functional medicine specialists. You can meet them on our medical team page.
Close to Home
Our clinic is in Tijuana, about 20 minutes from San Diego International Airport. That makes it easy for families to visit and for patients to return home after treatment.
What to Expect as an International Patient
We have coordinated care for international patients since 2004. Here is how the process works:
- Free case review: send us your records, and our team reviews them remotely before you book anything.
- Personalized plan: we explain your options, expected timeline and costs in plain language.
- Travel coordination: our driver picks you up at the San Diego airport, Amtrak station or your hotel and handles the border crossing.
- Lodging: we arrange your stay at a partner hotel near the clinic. A family member or caregiver can stay with you.
- Treatment and daily care: you are seen by our team throughout your program.
- Return and follow-up: we take you back to San Diego and continue supporting you from home.
Learn more on our international patients page, or read about our full cancer treatment center in Mexico.
Is Precision Oncology Right for You?
Precision oncology can help patients at almost any stage, but it is especially valuable in a few situations. If you were recently diagnosed, testing your tumor early can guide your first treatment choice. If your cancer has returned or stopped responding to treatment, a new profile can reveal changes in the tumor and open new options. If you were told you have "no more treatment options," a fresh, personalized review may show possibilities that were not considered before.
It also helps if you want to avoid treatments that are unlikely to work. By understanding your cancer's biology, we can focus on therapies with a real chance of helping and spare you unnecessary side effects. Our team will review your existing reports and tell you clearly whether additional testing makes sense in your case.
Frequently Asked Questions
Is precision oncology the same as targeted therapy?
Not exactly. Targeted therapy is one type of treatment used in precision oncology. Precision oncology is the broader approach of choosing treatment based on your tumor's profile and your overall health.
Do I need new biomarker tests if I already had some done?
Not always. We review the tests you already have and only recommend additional testing when it can change your treatment plan.
Which cancers can benefit from precision oncology?
Many cancers can, including breast, lung, colorectal, melanoma, ovarian and pancreatic cancer. See the full list on our diseases we treat page.
Is it safe to receive cancer treatment in Mexico?
Choosing the right clinic is key. Look for a board-certified oncologist, transparent protocols, clear communication and long-term follow-up. We have treated patients from around the world for more than 20 years.
Can my doctor at home stay involved?
Yes. We are happy to share records and coordinate with your local doctors before, during and after treatment.
Start Your Personalized Plan
Your cancer is unique, and your treatment should be too. Our team is ready to review your records and show you what precision oncology can offer in your case.
Request your free case review, call us at (619) 832-2230, or message us on WhatsApp. We respond within 24 hours.
This article is for educational purposes and does not replace medical advice. Treatment outcomes vary from patient to patient.