Pediatric Hematology/Oncology
Clinical discussions on pediatric blood disorders, childhood cancers, and specialized treatment protocols.
Recent Discussions
How do you choose between the different available CAR-T cell therapy products for the treatment of relapsed Ph-negative ALL?
As implied by the question, there are now three (3) CD19 CAR-T cell products approved by the FDA for adults with relapsed/refractory B-ALL: tisagenlecleucel (tisa-cel), brexucabtagene autoleucel (brexu-cel), and obecabtagene autoleucel (obe-cel). They were all approved after single-arm prospective t...
What is your approach to cancer patients who inquire about alternative or complementary treatments?
It depends a little bit on what specifically they want to use, and if they are truly investigating alternative medicine or complementary medicine. For people seeking full alternative medicine without any conventional treatment, I tell them that a research study showed that people who pursued the alt...
Is there any outpatient protocol for cisplatin/doxorubicin neoadjuvant chemotherapy for osteosarcoma?
Not really. The full dose of cisplatin (120 mg/m²) is difficult (not to mention cruel) to deliver as an outpatient, given the need for fluids, antiemetics, and supportive care.
For post-operative radiation of resected high grade soft tissue sarcoma, how long of a delay do you tolerate before starting radiation?
The default/ideal answer is 4-6 weeks, but agreed that is often not feasible. In those circumstances, actively maximize wound healing efforts (plastic surgery, wound care service, lymphedema PT, etc) and start as soon as the surgeon feels it is safe to do so. But it does need to be safe, and ok by t...
How would you work up a patient with cutaneous mastocytosis?
In adults, consider mastocytosis as being systemic until you prove it is not. A single normal or low-elevated tryptase does not eliminate the possibility of systemic mastocytosis. All patients should go to Heme/Onc for consideration of bone marrow biopsy and ideally high-sensitivity PCR to look for ...
What is the preferred approach for an AYA patient with VHR B-ALL with iAMP21 mutation with an isolated early CNS relapse?
For relapsed high-risk disease such as iAMP21, the recommended approach is to achieve remission followed by consolidation with allogeneic stem cell transplantation. However, in cases of isolated CNS relapse, I favor CAR T-cell therapy first to achieve and deepen CNS remission, as it has demonstrated...
What is your standard for monitoring triglyceride level during therapy for ALL, particularly in regards to receiving pegaspargase?
Routine monitoring of triglyceride levels is not considered standard practice during pegaspargase therapy. Although hypertriglyceridemia is a common side effect of asparaginase treatment, it typically has no significant clinical impact on management decisions or future use of asparaginase. The condi...
Do normal methylmalonic acid levels absolutely rule out vitamin B12 deficiency?
An elevated MMA is a good indicator of B-12 deficiency but a normal level does not argue strongly against B-12 deficiency. Normal MMA levels have been reported in 10-25% of patients with known B-12 deficiency (B-12 levels below 100). Testing for an elevated homocysteine level might help but this tes...
How do you prescribe a steroid taper for radiation and checkpoint inhibitor related pneumonitis?
I subscribe to the philosophy of "hitting hard, tapering slowly" for cases of pneumonitis, either radiation pneumonitis, or checkpoint inhibitor-related pneumonitis (some of those cases probably have mixed origin, with contributions from radiation and/or checkpoint inhibitors). For severely symptoma...
What is your surveillance protocol for patients with common variable immunodeficiency receiving chronic IVIG therapy?
No target IgG level per se- dose/interval should be titrated to clinical condition. In general, trough IgG on treatment should be higher than 500 mg/dL, or 500 mg/dL higher than baseline. Most patients will not be in optimal clinical condition (minimal fatigue, arthralgias, absence of chronic cough,...