Can Tezepelumab help when other biologics have failed?

Question

Hello Doctor,

I am reaching out in desperation about my uncontrolled, severe asthma and to ask your thoughts on whether Tezepelumab might finally provide some relief.

I am 44 years old and have been hospitalized 11 times in the past year, despite being on what seems like maximum therapy: Breo 200/25 mmHg, Spiriva, montelukast, theophylline, and daily prednisone (20 mg), just to get through the day. I still need albuterol nebulizer treatments four to six times daily, often supplemented with my rescue inhaler in between. My pulmonologist previously tried Nucala for nine months and Fasenra for six months, but unfortunately, neither helped.

At this point, the ER staff recognize me by name. My most severe attack last month dropped my oxygen to 84 percent, requiring BiPAP support in the ICU.

Long-term steroid use has taken a serious toll. I have gained 40 pounds, developed osteopenia and early cataracts, and now have prediabetes with fasting blood sugars around 115 to 130. My PFTs show severe obstruction, with FEV1 at 42 percent of predicted even on my best day. These constant flares have forced me to leave my teaching career and go on disability.

Although my eosinophil count is only 290 and IgE is mildly elevated at 210, my triggers are unpredictable; weather, odors, exercise, and even laughter can cause a severe reaction. My pulmonologist mentioned Tezepelumab may work differently from other biologics and could help in cases like mine.

Could you explain how Tezepelumab differs from medications like Nucala and Fasenra? Also, my insurance initially denied Tezepelumab, suggesting I try Dupixent first. Does that make sense given my history of failed biologics?

Please help.

Thank you.

Answer 1

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

The possible causes for the concern would be as follows:

Your condition appears to be a form of severe type 2 inflammation-driven asthma (a subtype of asthma that is primarily caused by an overactive type 2 immune response, which involves certain immune cells (like eosinophils) and signaling proteins) that has not responded well to IL (interleukin)-5-targeting biologics. There may also be additional contributing triggers such as:

Non-allergic environmental irritants.
Mild immunoglobulin E (IgE) elevation refers to a slightly higher-than-normal level of IgE in the blood.
Potential airway remodeling.

I would recommend that you undergo these tests:

To better define your asthma type and exclude other contributing factors, these evaluations may help:

FeNO (fractional exhaled nitric oxide) to assess airway inflammation.
Chest CT (computed tomography) scan to rule out structural conditions like bronchiectasis.
Updated pulmonary function tests (PFTs), including bronchodilator response or methacholine challenge.
Allergy testing (if not recently done).
Sleep study to screen for obstructive sleep apnea, which can worsen asthma.

Other possible diagnoses:

Non-eosinophilic asthma (a type of white blood cell linked to allergic inflammation) is often triggered by infections, irritants, or obesity.
Steroid-resistant asthma (asthma where symptoms persist despite high-dose corticosteroid treatment) may be due to genetic, inflammatory, or immune system factors that make steroids less effective.
Asthma-COPD overlap (features of both asthma (e.g., variable airflow obstruction) and chronic obstructive pulmonary disease (fixed airflow limitation from smoking or environmental exposure, less likely at your age, but still worth reviewing).

The most likely diagnosis would be:

This is most consistent with severe, steroid-dependent type 2 asthma that has been resistant to previous biologic therapies, with significant systemic side effects from long-term prednisone use.

I recommend the following treatment options:

Tezspire (tezepelumab) is a reasonable next step. Tezepelumab works by blocking TSLP (thymic stromal lymphopoietin), an upstream cytokine involved in several inflammatory pathways, not just IL-5 or IgE. This makes it a promising option for patients like you, even with lower eosinophil and IgE levels.

Clinical studies show Tezepelumab helps reduce exacerbations across a wide range of asthma.

Additional recommendations

Referral to a severe asthma or tertiary care center may provide more specialized guidance.
Monitor for adrenal suppression, and consider steroid tapering strategies (gradual reduction of corticosteroid medications to minimize withdrawal symptoms and prevent adrenal insufficiency).
Look into pulmonary rehabilitation and breathing techniques (Buteyko method).
Support your bone, eye, and metabolic health with appropriate screenings and specialists (DEXA (dual-energy X-ray absorptiometry) scan, ophthalmology, endocrinology).

Follow-up plan:

Work closely with your pulmonologist to pursue Tezepelumab approval.
Schedule regular check-ins (every four to six weeks) during the initial treatment period.
Consider joining clinical trials or registries focused on severe asthma if eligible.

Prevention and support:

Maintain strict trigger avoidance (scents, cold air, infections, etc.)
Stay up to date on vaccinations (flu, COVID, pneumococcal).
Engage support services for weight, blood sugar, and emotional well-being as needed.

You have done everything possible to manage your condition, and your persistence is admirable. With the right support and next-step therapies like Tezepelumab, there is reason to be hopeful for better control and improved quality of life.

I hope this helps.

Thank you.