Personal profile
Main research areas
Phenylketonuria; Inherited Metabolic Diseases; Paediatrics
Current research
Evaluating the efficacy and safety of large neutral amino acids in the treatment of phenylketonuria
Potential conflicts of interest
None
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Dive into the research topics where Olivia Welle Fjellbirkeland is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Research output
- 5 Journal article
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Effect of long-term sepiapterin treatment on dietary phenylalanine tolerance in patients with phenylketonuria: interim results from the Phase 3 APHENITY Extension Study
van Spronsen, F., Peters, H., Margvelashvili, L., Agladze, D., Schwartz, I. V. D., Giżewska, M., Hamazaki, T., Guilder, L., MacDonald, A., Vijay, S., Inwood, A., Minami, M., Fjellbirkeland, O., Lund, A., Lah, M., Thomas, J. A., Longo, N., Kiykim, E., Ishige, M. & Burlina, A. & 29 others, , Apr 2026, In: Genetics in medicine : official journal of the American College of Medical Genetics. 28, 4, 101683.Research output: Contribution to journal › Journal article › Research › peer-review
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Efficacy and safety of sepiapterin versus sapropterin in patients with phenylketonuria: Results from the Phase 3, randomized, crossover, open-label, active-controlled AMPLIPHY trial
Giżewska, M., Inwood, A., Tyčová, R., Vijay, S., Fjellbirkeland, O., van Spronsen, F., Venegas-Moreno, E. M., Guilder, L., Burlina, A., Peters, H., Potter, M., Grošelj, U., Chakrapani, A., Bélanger-Quintana, A., Maillot, F., Rutsch, F., Arnoux, J.-B., Tchan, M., Ingalls, K. & Zhao, Z. & 3 others, , 2026, In: Metabolism: Clinical and Experimental. 178, 156513.Research output: Contribution to journal › Journal article › Research › peer-review
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Clinical assessment of growth patterns, weight, and dietary management in children and adults with phenylketonuria – a retrospective study
Bahtiri, L., Jørgensen, C., Ahring, K., Rasmussen, H., Hermansen, J. M., Fjellbirkeland, O. W., Lund, A. M. & Ørngreen, M. C., Dec 2025, In: Orphanet Journal of Rare Diseases. 20, 1, 621.Research output: Contribution to journal › Journal article › Research › peer-review
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The role of plasmapheresis in severe acute disseminated encephalomyelitis with clinical findings of transverse myelitis
Fjellbirkeland, O. W., Szpirt, W. M. & Børresen, M. L., Feb 2024, In: Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy. 28, 1, p. 119-124 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
1 Citation (Scopus) -
A New Case of Meningitis Caused by Psychrobacter sanguinis in a Child and Literature Review
Jespersen, J. B., Fjellbirkeland, O. W., Nielsen, C. H. & Andersen, L. P., 2022, In: EC Microbiology. p. EResearch output: Contribution to journal › Journal article › Research › peer-review