CAR T Cell Therapy for Lymphoma in Mexico: Why Sarah Skipped Chemo and Chose Tijuana
When Sarah and her husband told her oncologist at UT Southwestern that they were considering treatment in Mexico, the oncologist's response was immediate and unequivocal: do not go. It's not safe. You don't know what they'll do to you.
She hadn't asked the name of the clinic. She hadn't asked about the doctors. She knew nothing about the Immunotherapy Institute — and she advised against it anyway.
Sarah's husband, a meticulous researcher who approaches his wife's illness with the rigor of someone who refuses to accept an answer he hasn't tested, had a different response. "You say this thing isn't safe and you know nothing about it. You literally know nothing about this place." Meanwhile, he said, they knew with absolute certainty that chemotherapy — the treatment she was recommending — was not safe for Sarah's body.
Sarah is 34 years old. She has lymphoma. She had never had chemotherapy. She did not want to. And her husband had found something at the Immunotherapy Institute in Tijuana that changed everything: CAR T cell therapy, available here as a first-line treatment, without requiring Sarah to go through chemo first. That was the opening. They walked through it.
A 34-Year-Old With Lymphoma and a Husband Who Asked Better Questions
Sarah's husband is the kind of patient advocate that the medical system is rarely built for. He asks questions — detailed, logical, evidence-based questions that cut through the assumptions embedded in standard oncology practice. He asks about sugar and cancer. He asks about dosage rationale. He asks why the recommended treatment is safe when its known side effects include leukemia.
In his experience talking with oncologists at what he describes as "the best cancer hospitals in the world," he has found a consistent pattern: doctors who give answers that close conversations rather than open them. Doctors who default to pharmaceutical protocols without examining the logical foundations of those protocols. He noticed something specific: when a PET scan requires feeding the patient glucose to activate cancer cells and make them light up, and yet the oncologist simultaneously maintains that sugar has nothing to do with cancer — there is something missing in the clinical reasoning.
When he spoke with Dr. Perez at the Immunotherapy Institute, something was different. "This man is a one-of-a-kind, world-class physician and also a wonderful teacher." Not because he gave better answers — but because his answers revealed a fundamentally different framework: one where everything comes back to Sarah, the individual, not the cancer category she has been placed in.
The Same Dose for Everyone — Why Sarah Refused to Accept That
One of the husband's sharpest observations about conventional oncology is about dosage. "My 34-year-old fit wife is going to get the exact same dosage as a 400-pound man, or an 85-year-old woman." The dose, he notes, has nothing to do with who the patient is. It's based on cancer type. You get put in a box and you get the box's treatment.
For Sarah, this felt fundamentally wrong. She was young. She was fit. She had never had chemotherapy, and she did not want to begin there — particularly when she knew that conventional chemo's side effects included the possibility of developing leukemia, heart disease, and long-term immune compromise. She was being asked to accept significant, certain harm in exchange for uncertain benefit, with no acknowledgment that her individual situation might warrant a different approach.
The Immunotherapy Institute offered something categorically different. CAR T cell therapy — normally classified in the US as a third-line treatment, available only after two rounds of chemotherapy have already failed — was available here as a first option. Sarah had not been through chemo. She did not have to have been.
The Only Clinic in Mexico With CAR T — and a Doctor Who Talked About Sarah, Not the Cancer
The decision to choose the Immunotherapy Institute came down to two things. First: it was the only clinic they considered that offered CAR T cell therapy — and for Sarah's type of lymphoma, CAR T was the treatment they believed in. "CAR T cell therapy — it's just the way to go," the husband said, citing its application across lymphoma, several types of leukemia, and multiple myeloma. That was non-negotiable.
Second: Dr. Perez. "I've never spoken with a doctor like Dr. Perez. He's a brilliant man and a wonderful teacher." The difference wasn't just in the quality of the answers — it was in the orientation of the conversation. With other oncologists, every question led back to the cancer, the protocol, the pharmaceutical recommendation. With Dr. Perez, every answer led back to Sarah. What's happening inside Sarah. How these treatments will be effective specifically for Sarah. "Every time I ask a question he had a wonderful response that helped me understand deeper."
The husband was forced to "reshape our worldview" to understand the Immunotherapy Institute's approach — because the clinic isn't organized around defeating a disease. It's organized around healing a person.
Seventeen Minutes to Get Her Cells Back — and No Major Side Effects
Sarah's CAR T cell therapy at the Immunotherapy Institute was simpler than she had feared. She had spoken to a friend who had gone through CAR T in the United States — with hospitalization, complications, and a difficult recovery. What she experienced in Tijuana was a different picture entirely.
On a Tuesday, the team drew her blood. Not a large amount — enough to process her own immune cells and engineer them to recognize her cancer. The reinfusion came later via IV and took just 17 minutes. Three follow-up injections on separate days completed the protocol. "I was just a little bit tired one day," she said. No major symptoms. No hospitalization. No complications.
The nutrition conversation, conducted with Dr. Alfonso, addressed something that Sarah's US doctors had refused to discuss. She had always known she felt better eating certain foods than others. She had always suspected diet played a role in immune function. Her US oncologists dismissed it — "nothing's been proven about nutrition, so we're not going to talk about it." Dr. Alfonso explained exactly how avoiding specific allergens can reduce immune system load and improve the body's ability to fight cancer, creating what Sarah described as an environment where cancer "will not want to be." For her, that conversation was as valuable as any treatment.
No Major Side Effects, a New Framework for Health, and Certainty They Made the Right Choice
Sarah came through CAR T cell therapy with minimal side effects and maximum clarity. She is not yet at the end of her journey — but she is on a path that feels right, supported by a team that has explained every decision, answered every question her husband has raised, and built a treatment protocol around who Sarah actually is.
"I don't want to give just credit to Dr. Perez," the husband said, noting the entire team — Dr. Alfonso, Alejandro, the nurses — as world-class. "These are world-class physicians." The cultural shift at the Immunotherapy Institute — away from the institutional cancer model, toward something more like collaborative care between the patient and a team that genuinely knows them — is something Sarah's husband describes as a complete reset of how they understand medicine.
The husband summed up the core difference with a question he eventually stopped needing to ask: "When we're talking with Dr. Perez, everything is about Sarah." In a system that had been treating her as a category of patient, that shift — being seen as a person — was medicine in itself.
“With every other doctor it was about the cancer and the protocol. With Dr. Perez, everything came back to Sarah — what's happening inside Sarah, how these treatments will be effective for Sarah specifically. Dramatic difference. He is world-class.”
Key Takeaways from Sarah and Her Husband's Story
Sarah's husband is one of the most analytically rigorous patient advocates whose account we have heard — his observations carry the weight of someone who did real comparative work across top oncology centers:
✓ CAR T cell therapy is available at the Immunotherapy Institute as a first-line treatment for lymphoma — without requiring prior chemotherapy — which is a meaningful distinction from US practice, where CAR T is typically a third-line option.
✓ Sarah's CAR T experience was minimally invasive: blood drawn on Tuesday, reinfused via IV in 17 minutes, 3 follow-up injections, minimal side effects (one day of mild fatigue). This contrasts sharply with the hospitalization and complications her US-based reference point had experienced.
✓ Dr. Perez's approach — building every answer around the individual patient rather than the cancer category — represents a fundamentally different clinical philosophy that Sarah's husband describes as 'world-class' and unlike anything he encountered at top US cancer hospitals.
✓ Nutritional guidance — specifically how allergens affect immune function and cancer environment — was provided by Dr. Alfonso and represented information Sarah's US oncologists had flatly refused to discuss, calling it unproven.
✓ One-size-fits-all dosing in conventional oncology — the same dose for every patient with the same cancer type, regardless of age, weight, or health status — was a core concern for Sarah's family that the Immunotherapy Institute's individualized approach directly addresses.
Frequently Asked Questions
Questions we hear most from lymphoma patients and families considering CAR T cell therapy at the Immunotherapy Institute:
Can CAR T cell therapy be used for lymphoma without having had prior chemotherapy?
Yes — and this is one of the key distinctions of the Immunotherapy Institute's approach. In the United States, CAR T cell therapy is typically approved as a third-line treatment, available only after two or more rounds of chemotherapy have already failed. At the Immunotherapy Institute, CAR T can be offered as a first-line approach for appropriate candidates, which was the critical factor in Sarah's family's decision to choose Tijuana over US options.
What were the side effects of CAR T cell therapy for Sarah at the Immunotherapy Institute?
Sarah experienced minimal side effects — she was tired for one day. She had no major symptoms, no hospitalization, and no complications. This stands in notable contrast to her reference point of a friend who had CAR T cell therapy in the United States and experienced hospitalization and significant complications. The specific side effect profile varies by patient, and candidacy is assessed during the pre-arrival consultation.
How does the Immunotherapy Institute's CAR T cell process work?
At the Immunotherapy Institute, the CAR T process involved drawing a blood sample on a Tuesday, processing the patient's own immune cells to engineer them to recognize her specific cancer, and reinfusing those cells via IV — a process that took 17 minutes. Three follow-up injections on separate days completed the core protocol. The process is designed to minimize disruption while maximizing the immune system's ability to identify and destroy cancer cells.
Does the Immunotherapy Institute address nutrition as part of cancer treatment?
Yes — and for many patients from conventional oncology settings, this is one of the most significant differences. Dr. Alfonso at the Immunotherapy Institute discusses how specific dietary allergens affect immune system load and how the body's internal environment can be made more or less hospitable to cancer. Sarah's US oncologists had declined to discuss nutrition at all, calling it unproven. At the Immunotherapy Institute, nutrition is treated as an integral component of immune health and cancer management.
Is it reasonable to seek a second opinion at the Immunotherapy Institute if a US oncologist has advised against Mexico?
Absolutely — and Sarah's husband speaks directly to this. Her UT Southwestern oncologist advised against going to Mexico without asking the name of the clinic, the names of the doctors, or anything about the specific protocols offered. A recommendation against something you know nothing about is not the same as an informed medical opinion. Patients and families deserve a real evaluation of every available option, and the Immunotherapy Institute's pre-consultation process is designed to provide exactly that.
Take the Next Step
Sarah's husband came to the Immunotherapy Institute with a researcher's eye and a husband's heart. He had spoken to oncologists at the best cancer hospitals in the world. He had asked the hard questions. He had found the logical gaps. And then he spoke to Dr. Perez — and the conversation was different.
If you or someone you love has been diagnosed with lymphoma and conventional oncology's path doesn't feel right — whether because of the side effects of chemotherapy, the one-size-fits-all dosing, or simply the sense that the medicine isn't built around who you actually are — the Immunotherapy Institute wants to talk.
Ready to Take the Next Step?
Contact the Immunotherapy Institute today to explore CAR T cell therapy and personalized lymphoma treatment options — including first-line approaches for patients who have not had prior chemotherapy. Our team responds quickly and consultations are available worldwide. Visit immunotherapyinstitute.com to get started.