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“Who lives, who dies, who tells your story?”

That line from the musical “Hamilton” inspires me to keep telling the story of my daughter Mallory. She died two years ago Friday at the age of 25, two months after receiving a transplant to replace both of her lungs, which had been ravaged by cystic fibrosis and an infection that no drugs could eradicate.

Mallory was a prolific and gifted writer. In addition to works published as a journalist and environmental storyteller, she kept a private journal for 10 years. She gave me access to it right before her transplant — in case she didn’t “make it to the other side,” she told me. With the help of other family members, Mallory’s friends, and wonderful editors, I collected some of her diary entries into a book, “Salt in My Soul: An Unfinished Life,” that Random House published this spring.


Mallory used to say that writing healed her. I wish she could know that her writing is healing others, something I have seen in nearly 100 talks I have given to medical students and physicians, nursing students and nurses, and therapists and researchers of all kinds about my daughter’s insights into invisible illness, insurance obstacles, the need for balance with pain medications, access to health care, and health care itself.

Mallory is also helping heal people whose lives are threatened by once-untreatable infections, which is what ultimately ended her life.


Here’s the back story:

Mallory was diagnosed with cystic fibrosis when she was three. At age 12, a type of bacteria known as Burkholderia cepacia invaded her lungs. She didn’t let any of that stop her from becoming a three-sport varsity athlete in high school or a club volleyball player at Stanford, where she graduated Phi Beta Kappa.

During Mallory’s sophomore year in college, her lungs started to deteriorate. She needed a lung transplant, but wasn’t a good candidate for the procedure because of the Burkholderia. After a long wait — and stall tactics by our insurance company — the University of Pittsburgh Medical Center accepted Mallory into its transplant program. It was the only center in the country that performed transplants on individuals with cystic fibrosis and Burkholderia infections.

Mallory got her new lungs on Sept. 11, 2017, and was soon walking and doing physical therapy. The bacteria, though, emerged from their hiding places in her upper airway and sinuses and once again colonized her lungs. Because the bacteria were resistant to antibiotics, her dad, Mark Smith, resurrected an idea he had only partly pursued earlier: an experimental approach called phage therapy that uses a type of virus known as a bacteriophage — which means bacteria eater — to attack the Burkholderia running amok in Mallory’s new lungs.

In desperation, Mark reached out to Steffanie Strathdee, an epidemiologist at the University of California San Diego who had once saved her husband with phage therapy. Strathdee’s tweet on Nov. 7, 2017, galvanized the far-flung community of phage researchers.

Within a few days, scientists at Adaptive Phage Therapeutics, a biotech startup in Maryland, in collaboration with the U.S. Naval Medical Research Center, found a bacteriophage they believed would attack the strain of Burkholderia in Mallory’s lungs.

But time was running out. Mallory’s transplant surgeon, Dr. Jonathan D’Cunha, arranged for the University of Pittsburgh’s organ harvesting plane to pick up a container of the bacteriophage in Maryland and fly it to Pittsburgh, and then a helicopter to bring it to the hospital.

Mallory received the first dose of the phage cocktail on Nov. 14, but it was too late. Dr. Joseph Pilewski, co-director of UPMC’s cystic fibrosis program and Mallory’s beloved doctor, told us that she had suffered irreversible brain damage from the infection. She died the next day.

An autopsy later showed that the phage therapy had been working: the bacteriophages had reached their targets and were doing what they were supposed to do.

Mark couldn’t save his daughter, but he was determined to save others with cystic fibrosis. He turned to the media, established Mallory’s Legacy Fund at the Cystic Fibrosis Foundation, and then spoke with Dr. Michael Boyle, the foundation’s senior vice president of therapeutics development, to share his vision: Mark wanted kids with cystic fibrosis to get phage therapy before infections destroyed their lungs.

Boyle was incredibly receptive and asked for an introduction to Strathdee and Dr. Robert Schooley, co-directors of the Center for Innovative Phage Applications and Therapeutics at the University of California, San Diego. Mark and I raised $100,000 and made an inaugural grant to the center to fund the first clinical trial of phage therapy.

My tour promoting Mallory’s book has let me share Mallory’s insights and Mark’s dream with audiences at Harvard, Stanford, the University of Pennsylvania, and many other medical institutions. A trio of Australian researchers published a review of phage therapy in the journal Frontiers in Cellular and Infection Microbiology highlighting the work being done in this long-neglected field. Our phones started ringing, emails were flying — people wanted this treatment.

We introduced desperate patients and family members to Strathdee and Schooley. After I gave a talk at the University of Virginia School of Law, Mark spoke about the successful application of phage therapy in a patient in the United Kingdom with a drug-resistant infection. He also mentioned a patient with cystic fibrosis who had initially been denied a place on the transplant list but was later included after receiving phage therapy at Yale. A young woman in the audience introduced herself to Mark, saying, “I’m Ella Balasa, the Yale patient.” Ella connected us to the Yale team — pulmonologist Jon Koff and biologist Ben Chan.

A few days later, Mark met with Koff and Chan, participated in environmental phage collection and recorded footage of a patient receiving phage therapy. It kept going from there.

Two researchers inspired by Mallory’s case, Jessica Sacher and Jan Zheng, have created Phage Directory, the first phage therapy data bank.

Last week, Israeli researchers working on phage therapy told me they had found a match for the Burkholderia strain that infected my daughter. It was devastating for me to hear that, but it’s another instance of her continuing to help and heal others. The researchers asked if they could name this phage prep after Mallory.

The resurrection of phage therapy couldn’t be more timely. Many strains of bacteria, fungi, and other pathogens have become resistant to the antimicrobial drugs that once made treating infections a simple and routine part of medicine. The Centers for Disease Control and Prevention estimate that more than 2 million Americans are infected with antibiotic-resistant bacteria known as superbugs each year and as many as 23,000 die from these infections.

Although phage therapy still has a long way to go before it becomes part of mainstream medicine, Mark and I are confident it will get there.

Mallory wrote in her journal, “I feel like people with CF are privy to secrets it takes most other people a lifetime to understand … How lucky we are to be alive … That we can leave behind a legacy when we go that will impact others.”

She has done just that. Rest in peace, Mallory, and keep inspiring others.

Diane Shader Smith is a writer and publicist, cystic fibrosis fundraiser, and proud mother of Mallory and Micah Smith.

  • I have long thought this would be a new weapon against drug resistant bacteria as it is a natural enemy. When I was in Chile in the late 1960’s, there was an oral treatment against water borne organisms causing anything from acute diarrhea (shigella, Amoebic dysentery) typhoid and paratyhoid fever at least from what I can remember. It was called a vacuna or vaccination. It was a system of phages against those specific bacteria plus bacteria used to culture them. So in theory, it would persist and attack those pathogens if they were ingested.
    It was called Vacuna Crouveri oslt. Came in a vial. Bought a small case but it has since been lost. Did take one I think on an empty stomach. This may explain why some people don’t get certain waterborne infections as they may be harboring these phages, which like any organism, can evolve to adapt to mutations in the target bacteria. A natural ecosystem.
    I’m glad to see this line of research now taking place as it is a more natural weapon that can coevolve along with the target bacteria.

  • Just a few weeks ago, on Oct 21, 2019 (well ahead of schedule) the FDA approved Vertex Pharmaceutical’s Trikafta. This 3-drug combination bolsters a protein that moves salt in and out of cells (in most CF patients the CFTR gene working this protein is mutated). Mallory’s mother was very adroit in the title of her daughter’s book, and Diane Shader Smith is a superb advocate for phage therapy. This R&D angle is swiftly catching on: recent news articles, the Phage Therapy data bank etc. Kin Canada (Kinsmen and Kinettes Clubs in Canada established almost 100 years ago on Feb 20, 1920 by Hal Rogers) have since 1964 raised $1M per year for cystic fibrosis research and treatment. I was a Kinette, and when my 2-year old daughter developed lung problems I had to have her checked for CF. Luckily it was “only” asthma. Mallory has left a strong legacy in her immense contribution to finding solutions to address disastrous infections that are linked to CF and other (lung) diseases. Best wishes to all affected, and success to all involved in developing phage therapy and other solutions.

  • Thank you Diane for your story and I am so sorry for your loss.
    CF is a long haul from day one and it’s history is so important to share.
    I feel that stories from those in the trenches and front lines are extremely important.
    It sounds as if you had support from the get go with your medical team.
    Did you run into any walls and obstacles in terms of insurance?
    How was her education handled? Did she have an IEP?
    Did she interact with any Child Life Professionals?
    Was your husband’s Income able to support the extras needed when dealing with a special needs child?
    The last I heard about CF was that the daily needed treatments of breaking up the lung congestion were needed less? Is that true? And what about any genetic news in terms of the condition?
    I hope you all had both professional and peer to peer support in the years of your daughter’s life. So glad she wrote! My her words live on.

  • Thank you for the article. It is incredibly important and timely as bacterial resistance is a massive problem getting much worse. In fact, I am on record with my colleagues and family that if I am ever incapacitated due to a resistant bacterial infection, that they should contact researchers working with bacteriophage (beginning with U. Cal San Diego and the Navy) in addition to companies dedicated to developing such treatments, see e.g., The ultimate will be quickly made synthetic bacteriophage (i.e. rather than “finding” the needed phage, you “synthesize” the specific phage).

  • I am Steffanie Strathdee’s very proud Mom. I am so inspired by the return of phage therapy ,it has and will save many patients (like my son in law Tom)
    I am in the process of reading “. Salt in my Soul” A tribute to Mallory Smith
    unfortunately not in time to save her but hopefully many others.o

  • Thank you for sharing this about Mallory, I’m so sorry for your loss as she is a beautiful person,,as is her family This is the second story I’ve heard about the phage therapy. How can I learn more about this type of treatment in case anyone I know needs it? How do you get a hold of the phage list and who to ask for certain types of bacteria that are hard or impossible to treat? Could you please let us all know? Thank you so much. Let’s all help one another

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