Purinethol

The researchers are doing this study to find out whether obecabtagene autoleucel (obe-cel) is an effective treatment for people with B-cell acute lymphoblastic leukemia (ALL) that is in complete remission (CR, meaning all signs of cancer are gone) with no measurable residual disease (MRD-negative, meaning there are no detectable cancer cells). Participants in this study will have received past treatment for their B-cell ALL, and their disease will be in MRD-negative CR for the first time (first MRD-negative CR).

Many Veterans with gastrointestinal disorders, such as inflammatory bowel disease (IBD), also have mental health conditions. IBD and mental health conditions can worsen one another through the brain-gut axis, leading to dramatic deficits in psychosocial functioning and quality of life (QOL). Yet, few Veterans with comorbid IBD and mental health conditions receive psychotherapy and no evidence-based psychotherapies have been tested in Veterans with these comorbidities. Adapting brief acceptance and commitment therapy (ACT) to the specific to the needs of these patients and embedding treatment into routine gastroenterology care may increase Veterans' access to efficient and effective rehabilitative care. This study aims to adapt and test an integrated, 1-Day ACT intervention tailored to the specific needs of Veterans with IBD and mental health conditions to improve psychosocial functioning and QOL.

The purpose of this study is to find out whether the combination of mezigdomide and revumenib is a safe treatment for people with relapsed or refractory KMT2A-r, NUP98-r, and NPM1-m acute leukemias.

This study with ALTB-268 will determine the safety, tolerability, pharmacokinetics and pharmacodynamics of single ascending doses of intravenously administrated ALTB-268 in healthy participants.

Background: Acute lymphoblastic leukemia (ALL) is a type of blood cancer. Chimeric antigen receptor (CAR) therapy involves taking immune cells (T cells) from a person and modifying them to better target cancer cells. CAR T-cell therapy that targets a marker called CD19 has been show to can cure ALL in many children and adults. But in about 50% of patients, the ALL comes back within a year. Researchers want to find out if a second treatment with CAR T-cell therapy that targets a different marker, CD22, can keep the cancer away longer. Objective: To see if CD22 CAR T-cell therapy can keep ALL away longer. Eligibility: People aged 3 to 65 years who have no signs of cancer after CD19 CAR T-cell treatment for ALL. Design: Participants will be screened. They will have imaging scans and tests of their heart function. A sample of tissue (biopsy) will be collected from their bone marrow. They will have a fluid sample collected from the area around their spinal cord. Participants will undergo collection of their white blood cells (T cells) during a procedure called leukapheresis. Blood will be taken from their body through a vein. The blood will pass through a machine that separates out the T cells. The remaining blood will be returned to the body through a different vein. The cells will be altered in a lab to create CD22 CAR T-cell therapy. Participants will take drugs over 4 consecutive days to prepare their body for the CAR T-cell therapy; then they will receive their modified T cells through a tube inserted into a vein. Some people may need to stay in the hospital during treatment. Participants will have follow-up visits for 2 years.

Children with Crohn's disease (CD), a type of Inflammatory Bowel Disease (IBD), often face serious health challenges, including poor growth, frequent hospital stays, and long-term medication use. Although biologic drugs like infliximab, an anti-TNFα (Tumor necrosis factor α) medication, have improved treatment, they don't work for everyone: many children still experience symptoms or disease flare-ups. Nutritional therapies, especially the Crohn's Disease Exclusion Diet (CDED), may help improve treatment outcomes. This study will assess whether starting CDED at the same time as infliximab leads to better responses to treatment. The goal of this study is to improve how well children respond to therapy, reduce drug exposure, and support better long-term health.

The goal of this clinical trial is to evaluate whether disease remission can be maintained when biologic therapy is reduced in patients with Crohn"s disease (CD) and ulcerative colitis (UC) taking ustekinumab (UST). The main question it aims to answer is: Can we de-escalate UST subcutaneous dose either from every 4 weeks (Q4) to every 8 weeks (Q8) or every 8 weeks (Q8) to every 12 weeks (Q12) in CD or UC patients in deep remission without loosing their response? Researchers will follow UST blood levels, inflammation markers and intestinal mucosa integrity and to see if UST dose can be reduced while maintaining clinical remission. Participants will: Change UST dosing from Q4 to Q8 or from Q8 to Q12. Visit the clinic once every 12 weeks for checkups and tests.

This study is a prospective, case-control study evaluating whether the PET radiotracer 68Ga-FAPI-46 can detect fibrostenosing Crohn's disease in the small bowel. The goal is to determine whether areas of early or developing fibrosis ("pre-stricture" changes) demonstrate uptake of the tracer, which binds to fibroblast activation protein (FAP). Participants with small bowel Crohn's disease will be assigned to either a case or control group based on CT or MR enterography findings at enrollment. Cases will include participants who have a small bowel stricture or probable stricture, with or without penetrating complications. Controls will include participants with small bowel Crohn's disease without strictures. Controls may have active inflammatory disease, luminal narrowing, or no active inflammation (including postoperative or chronic changes), as long as no stricture is present. Because most radiologic strictures represent more advanced fibrostenosis, the study aims to enroll a larger proportion of controls to better characterize early fibrotic changes. Approximately one-third to one-half of participants will be cases, and the remainder controls. This design will allow comparison of FAPI uptake patterns in patients with and without strictures to understand how FAP expression relates to the development of small bowel fibrosis.

This is a 28-week, single-arm, open-label phase II clinical trial evaluating the combination of Tirzepatide and remote, supervised, tailored resistance exercise training to achieve weight loss in adult survivors of childhood acute lymphoblastic leukemia (ALL) living with obesity or overweight with comorbidity. Primary Objective(s): • To evaluate the effectiveness for weight loss of the combined intervention using once weekly Tirzepatide plus remote, supervised, tailored resistance exercise (three sessions per week) in adult survivors of childhood ALL with obesity or overweight (BMI ≥27 kg/m2) with ≥1 weight-related comorbidity (hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease). The effectiveness will be estimated as the proportion of evaluable participants who achieve at least 5% weight loss from baseline to week 28. The study will target a proportion of participants achieving 5% weight loss of 70% and consider fewer than 40% achieving 5% weight loss as unacceptable. Secondary Objective(s): * Estimate the proportion of participants who adhere to the 28-week combined intervention. Adherence to Tirzepatide will be defined as receiving at least 70% of prescribed doses. Adherence to resistance exercise will be defined as attending at least 50% of prescribed exercise sessions. Adherence to the combined intervention will be considered if participants complete the study and meet both the Tirzepatide and exercise adherence endpoint. The adherence to each component of the intervention will also be reported. * Estimate the average percentage weight loss from week 0 to 28 for participants completing the combined 28-week intervention. The study will target a mean weight reduction of 10% and consider \<5% unacceptable.

Protein glycosylation is a critical post-translational modification that regulates protein trafficking and protein-protein interactions impacting a host of physiological processes. There is a growing appreciation of glycosylation defects in chronic human diseases, including Crohns disease. Crohns disease (CD), and the related condition of ulcerative colitis, are chronic inflammatory bowel diseases (IBD) that impact 3.1 million Americans. While the development of medications has revolutionized care of CD patients, clinical remission is only achieved in \~40% of patients a therapeutic ceiling that has not changed in 20 years. These data underscore the need for new CD treatment strategies. The investigators are focused on understanding the role of defective N-glycosylation in CD, as an innovative strategy to identify and develop new therapeutics. Depending on ancestral background, 7-25% of CD patients carry a pathogenic, missense mutation in the manganese (Mn) transporter ZIP8 (rs13107325; ZIP8 A391T). ZIP8 regulates systemic Mn homeostasis with ZIP8 391-Thr causing a relative Mn insufficiency. Mn is a required metal cofactor for enzymes regulating key cellular processes, like N-glycosylation. In the gut, protein N-glycosylation plays key roles in host-pathogen interactions, inflammation, and cell-cell interactions. The investigator's central hypothesis is that in patients carrying ZIP8 391-Thr - CD is exacerbated by aberrant N-glycosylation and that this defect can be targeted by specific, safe therapy. Supporting this hypothesis, Mn levels are reduced (\~15%) in ZIP8 391-Thr allele carriers and this is associated with a decrease in complex N-glycan branching in plasma. Further, the investigators uncovered a microbiota signature in the ileal mucosa that implicated altered bile acid homeostasis in ZIP8 391-Thr carriers. To better understand CD in ZIP8 391 carriers, the investigators generated a knock-in mouse model of ZIP8 391-Thr (Zip8393T/393T). Like patient data, the investigators observe reduced branching of N-glycans and disrupted bile acid homeostasis in the Zip8393T/393T mice. Promising human trials have shown that defects in N-glycan branching can be safely restored by raising levels of the rate-limiting metabolite UDP-N-acetylglucosamine (GlcNAc) via supplementation with free GlcNAc. The investigator's preliminary data in Zip8393T/393T mice have demonstrated that GlcNAc supplementation restores N-glycan branching deficits, rescues the defect in bile acid homeostasis, and ameliorates colitis susceptibility. Thus, the objective of the proposed research is to test a safe and effective therapy for patients carrying ZIP8 391-Thr and others who may have underlying changes in N-glycosylation. The investigators will perform a multi-center, randomized, double-blind, placebo-controlled cross-over study to test the safety and tolerability of oral GlcNAc as a proof-of-concept study. The investigators will use two cohorts stratified by ZIP8 391-Thr genotype status (carriers and non-carriers, n= 20 participants in each cohort, total= 40 participants).

This phase II trial tests the effect of dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (DA-EPOCH) with or without rituximab plus ponatinib in treating patients newly diagnosed with Philadelphia chromosome positive (Ph+) acute lymphoblastic leukemia or lymphoma (ALL). Etoposide is in a class of medications known as podophyllotoxin derivatives. It blocks a certain enzyme needed for cell division and deoxyribonucleic acid (DNA) repair and may kill cancer cells. Prednisone is in a class of medications called corticosteroids. It is used to reduce inflammation and lower the body's immune response to help lessen the side effects of chemotherapy drugs. Vincristine is in a class of medications called vinca alkaloids. It works by stopping cancer cells from growing and dividing and may kill them. Cyclophosphamide is in a class of medications called alkylating agents. It works by damaging the cell's DNA and may kill cancer cells. It may also lower the body's immune response. Doxorubicin is a drug that is used to treat many types of cancer and is being studied in the treatment of other types of cancer. Doxorubicin comes from the bacterium Streptomyces peucetius. It damages DNA and may kill cancer cells. It is a type of anthracycline antitumor antibiotic. DA-EPOCH involves a longer exposure time to doxorubicin, vincristine and etoposide compared to a higher concentration over a shorter time which may provide better tumor response. Rituximab is a monoclonal antibody. It binds to a protein called CD20, which is found on B cells (a type of white blood cell) and some types of cancer cells. This may help the immune system kill cancer cells. Ponatinib blocks BCR::ABL1 and other proteins, which may help keep cancer cells from growing and may kill them. It may also prevent the growth of new blood vessels that tumors need to grow. Ponatinib is a type of tyrosine kinase inhibitor and a type of antiangiogenesis agent. Giving DA-EPOCH with or without rituximab plus ponatinib may be safe, tolerable, and/or effective in treating patients with newly diagnosed Ph+ ALL.

The objective of this trial is to test whether a smartphone app, SMART-IBD, is effective in improving medication adherence and self-management skills in adolescents with IBD. The investigators will conduct a randomized control trial to compare 35 youth (ages 13-17) with IBD using an app that contains daily symptom diaries, education content, medication reminders, as well as monthly engagement challenges to 35 youth in an attention control group that will complete daily diaries. The length of the intervention will include one month of baseline symptom and adherence collection, a baseline assessment, 5 months of intervention, and a post-treatment assessment.