Chayse, Ashley, Brian, and Chrissy share their stories
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People living with hemophilia A may share a diagnosis, but their experiences living with a bleeding disorder are completely unique. And that includes their treatment journeys. As life and health change over time, treatment goals may change. So they may find they need to switch to a new treatment to achieve their most important goals.
Since 2023, more than 1500 people living with hemophilia A have switched to ALTUVIIIO® [antihemophilic factor (recombinant), Fc-VWF-XTEN fusion protein-ehtl], the #1 most switched-to Factor VIII replacement therapy* that keeps factor activity levels higher (above 40%) for multiple days of the week with one weekly infusion.
Find out why these 4 real ALTUVIIIO patients made the switch, and see if you should talk to your doctor about whether ALTUVIIIO might be right for you:
*Based on specialty pharmacy channel and HTC-reported data from October 2023 to January 2025.
CHAYSE SWITCHED FOR FEWER INFUSIONS

For decades, Chayse used the same factor treatment every other day, and his factor levels were stable. But after his career as a professional musician took off, he realized that his treatment schedule was becoming a real burden.
He did some math and was shocked to realize that in 28 years he’d stuck himself more than 5000 times—more than 180 times a year, on average.
He heard about ALTUVIIIO through the hemophilia community and learned that it was a once-weekly infusion with a 48-hour half-life in adults, which was important both for his lifestyle and his veins. So, he decided to do more research and talk to his doctor.
He says, “If ALTUVIIIO was right for me, that would mean sticking myself as few as 52 times in a year—and less worrying about transporting and packing doses of factor while we travel. Using ALTUVIIIO has simplified my routine, and the peace of mind knowing that I’m covered for longer has made me so happy.”
Check out Chayse’s story.
MOM, ASHLEY, PRIORITIZED PROTECTION
For decades, Chayse used the same factor treatment every other day, and his factor levels were stable. But after his career as a professional musician took off, he realized that his treatment schedule was becoming a real burden.
He did some math and was shocked to realize that in 28 years he’d stuck himself more than 5000 times—more than 180 times a year, on average.
He heard about ALTUVIIIO through the hemophilia community and learned that it was a once-weekly infusion with a 48-hour half-life in adults, which was important both for his lifestyle and his veins. So, he decided to do more research and talk to his doctor.
He says, “If ALTUVIIIO was right for me, that would mean sticking myself as few as 52 times in a year—and less worrying about transporting and packing doses of factor while we travel. Using ALTUVIIIO has simplified my routine, and the peace of mind knowing that I’m covered for longer has made me so happy.”

Because Ashley’s older brother has severe hemophilia A, she knew there was a possibility that her own children could be born with hemophilia. So she and her husband had medical plans in place when her middle son, 5-year-old Harrison, was born. He was diagnosed at birth with hemophilia, and in the first year of his life, they treated him on demand until they realized he needed more protection. In their search for the right treatment, they tried prophylaxis treatments—both factor and non-factor.
Then Ashley heard about ALTUVIIIO at a conference for bleeding disorders, and Harrison’s doctor supported making another switch. Harrison started treating with ALTUVIIIO in December 2023.
Ashley says, “Switching was worth it. The schedule is a lot more efficient for our life, and he hasn’t had any breakthrough bleeds while on this product. We don’t worry about supplementing with factor like we used to. We spend less time infusing, and more time together.”
ALTUVIIIO was studied over 1 year in the XTEND-Kids study in children under 12 years of age. Routine prophylaxis with ALTUVIIIO resulted in a mean ABR of 0.6 and a median ABR of 0 based on treated bleeds. Efficacy of prophylaxis was evaluated in 72 of these children.†
Check out Ashley’s story.
† ALTUVIIIO was studied in XTEND-Kids, which enrolled 74 previously treated male children 1 year to under 12 years of age with severe hemophilia A. The primary goal of the XTEND-Kids study was to determine whether or not children under 12 years of age developed inhibitors to ALTUVIIIO. Zero inhibitors were detected in the 74 children.
BRIAN WANTED ONE PRODUCT

Brian became involved in the hemophilia community in his senior year of high school, learning about the history of the community and the newest treatments and studies. At the time, he was treating with a factor mimetic therapy and supplementing regularly with factor.
Armed with new perspective and knowledge about available treatment options, Brian decided he wanted to use a single product and it needed to be factor. So, as soon as he heard about ALTUVIIIO, he talked to his doctor and made the switch in August 2023.
Remembering that time, Brian says, “Because I wasn’t having any significant issues with my previous treatment, people would ask me, ‘Why switch?’ To some people, it may have seemed like a change that wasn’t necessary. I think it’s important to talk to your healthcare team about changing treatment simply because it isn’t right for you at this stage of your life.”
His passion for advocacy has become a future career. He’s currently pursuing a master’s degree in public health, with a focus on health policy. And he leaves us with this reminder: “You are your own best advocate. Hemophilia is not a one-size-fits-all diagnosis.”
Check out Brian’s story.
CRISSY NEEDED TO CONTROL HER BLEEDS

Chrissy is a critical care nurse with mild hemophilia A, who struggled since childhood to get a medical diagnosis. As a result, she had a tough time controlling her bleeds. She also experienced long-term injuries, and hemorrhaged during childbirth despite warning her doctor about her physical symptoms and status as a person who carries the hemophilia gene. After years of trying to get the right medical attention, she was discouraged and felt depressed.
Finally, she was able to make an appointment with a new hematologist who is also a woman with hemophilia. She underwent genetic testing and was diagnosed with mild hemophilia A. With an official diagnosis in hand and treatment goals in mind, she searched for the right treatment. She tried both factor and non-factor therapies, but she was bleeding frequently and couldn’t get control of it. She needed to get a handle on frequent bleeds she suffered due to her physically demanding career.
Then, her brother started using ALTUVIIIO, and her hematologist recommended that she give it a try. She started on ALTUVIIIO in April 2023. She says, “I have been on ALTUVIIIO for over a year now, and I infuse ALTUVIIIO once weekly. I like only having to use one product and being able to make it through my work week without getting bleeds as often.”
ALTUVIIIO was studied in 159 adults and adolescents (12 years and older) with severe hemophilia in the XTEND-1 study. Routine prophylaxis with ALTUVIIIO resulted in a mean ABR of 0.7 and a median ABR of 0 based on treated bleeds. Efficacy was evaluated in 128 of these patients.
Check out Chrissy’s story.
Now that you’ve met real ALTUVIIIO patients and learned how it’s helped them reach their treatment goals, you may be considering talking with your doctor about making the switch. You can sign up to speak with an ALTUVIIIO Peer Mentor about their experiences switching. And, our Doctor Discussion Guide can help. It offers a list of questions to jump-start the conversation with your doctor.
INDICATION
ALTUVIIIO® [antihemophilic factor (recombinant), Fc-VWF-XTEN fusion protein-ehtl] is an injectable medicine that is used to control and reduce the number of bleeding episodes in people with hemophilia A (congenital Factor VIII deficiency).
Your healthcare provider may give you ALTUVIIIO when you have surgery.
IMPORTANT SAFETY INFORMATION
What is the most important information I need to know about ALTUVIIIO?
Do not attempt to give yourself an injection unless you have been taught how by your healthcare provider or hemophilia center. You must carefully follow your healthcare provider’s instructions regarding the dose and schedule for injecting ALTUVIIIO so that your treatment will work best for you.
Who should not use ALTUVIIIO?
You should not use ALTUVIIIO if you have had an allergic reaction to it in the past.
What should I tell my healthcare provider before using ALTUVIIIO?
Tell your healthcare provider if you have had any medical problems, take any medications, including prescription and non-prescription medicines, supplements, or herbal medicines, are breastfeeding, or are pregnant or planning to become pregnant.
What are the possible side effects of ALTUVIIIO?
You can have an allergic reaction to ALTUVIIIO. Call your healthcare provider or emergency department right away if you have any of the following symptoms: difficulty breathing, chest tightness, swelling of the face, rash, or hives.
Your body can also make antibodies called “inhibitors” against ALTUVIIIO. This can stop ALTUVIIIO from working properly. Your healthcare provider may give you blood tests to check for inhibitors.
The common side effects of ALTUVIIIO are headache and joint pain.
These are not the only possible side effects of ALTUVIIIO. Tell your healthcare provider about any side effect that bothers you or does not go away.
Please see full Prescribing Information.
Please consult your healthcare professional if you have any questions about your health or treatment.
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