6 Clinical Trials for Various Conditions
This is a Phase I/II, open label, single center study to assess the safety and tolerability of EXG34217 in bone marrow failure patients with telomere biology disorders.
This is a long-term rollover follow-up study for Phase I/II study (Protocol EXG-US-01).
The goal of this clinical trial is to learn if a combination therapy of deoxycytidine (dC) plus deoxythymidine (dT) is safe in patients with telomere biology disorders. The main questions it aims to answer are: * Is the therapy safe with tolerable side effects in patients with telomere biology disorders? * Are peripheral blood counts improved in patients with telomere biology disorders who have cytopenias? Participants will: * Take study drug by mouth three times daily for 24 weeks * Make approximately 2 visits to Boston Children's Hospital during the 24 weeks: once at the beginning of treatment and once at the end of treatment. * Go to a lab for a blood draw an additional 6 times during treatment. * Have 9 phone calls with a research nurse, including one 4 weeks after treatment ends. * Keep a diary to track doses of study drug that were taken or missed.
Background: Bone marrow failure diseases are rare. Much is known about the diseases at the time of diagnosis, but long-term data about the effects of the diseases and treatments are lacking. Researchers want to better understand long-term outcomes in people with these diseases. Objective: To follow people diagnosed with acquired or inherited bone marrow failure disease and study the long-term effects of the disease and its treatments on organ function. Eligibility: People aged 2 years and older who have been diagnosed with acquired or inherited bone marrow failure or Telomere Biology Disorder. First degree family members may also be able to take part in the study. Design: Participants will be screened with a medical history, physical exam, and blood tests. They may have a bone marrow biopsy and aspiration. For this, a large needle will be inserted in the hip through a small cut. Marrow will be drawn from the bone. A small piece of bone may be removed. Participants may also be screened with some of the following: Cheek swab or hair follicle sample Skin biopsy Urine or saliva sample Evaluation by disease specialists (e.g., lung, liver, heart) Imaging scan of the chest Liver ultrasounds Six-Minute Walk Test Lung function test Participants will be put into groups based on their disease. They will have visits every 1 to 3 years. At visits, they may repeat some screening tests. They may fill out yearly surveys about their medicines, transfusions, pregnancy, bleeding, and so on. They may have other specialized procedures, such as imaging scans and ultrasounds. Participation will last for up to 20 years.
Background: DC and related TBDs are a group of illnesses caused by variants in genes that regulate telomeres. These illnesses can cause problems with the skin and mucous membranes. They can also cause ophthalmic, dental, immunologic, and other abnormalities. Researchers want to learn more about these illnesses and the people who have them. Objective: To learn about the informational, pragmatic, and psychosocial challenges and unmet needs of individuals and families affected by DC and related TBDs. Eligibility: People aged 18 years and older who have DC or related TBD or who are, or have been, a caregiver to someone with DC or related TBD. Design: This study has 2 parts: a survey and a telephone interview. Participants may choose to take part in one or both parts. Participants may complete an online survey. They will select which group most applies to them: person with DC/TBD; parent/caregiver to a person with DC/TBD; or bereaved parent/caregiver of a person who had DC/TBD. The survey will be based on the group they choose. They will answer 20-30 questions. The survey will take 10-20 minutes to complete. Participants may take part in a phone interview. It will take 50-70 minutes to complete. They will give their name, email address, and phone number to schedule the interview. The interview will be audio recorded and transcribed. Personal identifiers will be removed.
This is a phase II trial of T cell receptor alpha/beta depletion (α/β TCD) peripheral blood stem cell (PBSC) transplantation in patients with inherited bone marrow failure (BMF) disorders to eliminate the need for routine graft-versus-host disease (GVHD) immune suppression leading to earlier immune recovery and potentially a reduction in the risk of severe infections after transplantation.