Loftus WK, Metreweli C Normal splenic size in a Chinese population. J Ultrasound Med. 1997 May;16(5):345-7.
McGovern MM, Avetisyan R, Sanson BJ, Lidove O Disease manifestations and burden of illness in patients with acid sphingomyelinase deficiency (ASMD). Orphanet J Rare Dis. 2017 Feb 23;12(1):41. doi: 10.1186/s13023-017-0572-x.
Revel-Vilk S, Fuller M, Zimran A Value of Glucosylsphingosine (Lyso-Gb1) as a Biomarker in Gaucher Disease: A Systematic Literature Review. Int J Mol Sci. 2020 Sep 28;21(19):7159. doi: 10.3390/ijms21197159.
Wan L, Hsu CM, Tsai CH, Lee CC, Hwu WL, Tsai FJ Mutation analysis of Gaucher disease patients in Taiwan: high prevalence of the RecNciI and L444P mutations. Blood Cells Mol Dis. 2006 May-Jun;36(3):422-5. doi: 10.1016/j.bcmd.2006.02.001. Epub 2006 Mar 20.
Screening for Gaucher Disease and Acid Sphingomyelinase Deficiency From Taiwanese Candidates With Splenomegaly and/or Thrombocytopenia
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
