Prefrontal and hippocampal microstructural gray matter following cognitive training under moderate hypoxia in mood disorders: a randomized controlled trial

BackgroundCognitive impairment persists during partial or full remission in 50–70% of individuals with mood disorders and impacts daily functioning and clinical prognosis. Preclinical evidence suggests that extended exposure to moderate hypoxia, combined with motor-cognitive learning, may elevate neuroplasticity and improve cognition. In these individuals with remitted mood disorders, we found that cognitive training under repeated moderate normobaric hypoxia improved executive function, and here investigate neurobiological mechanisms.MethodsParticipants with major depressive disorder (MDD) or bipolar disorder (BD) in partial or full remission were randomized to 3 weeks of 3.5-h daily normobaric hypoxia (12% O2) combined with cognitive training five to 6 days per week or treatment-as-usual (TAU). Participants were assessed with cognitive tests and diffusion-weighted MRI at baseline and 1 month after treatment completion (week 8) as part of the ALTIBRAIN trial (ClinicalTrials.gov: NCT06121206). Prefrontal and hippocampal gray matter microstructure were modelled with Neurite Orientation Dispersion and Density Imaging (NODDI).ResultsFifty-seven participants (mean age 39 years, SD: 13, 70% female) with baseline MRI data were included. No significant effects of hypoxia-cognition training vs. TAU on neurite density index (NDI) or orientation dispersion index (ODI) were observed in either the prefrontal cortex or hippocampus (all p-FDR ≥ 0.832). No significant associations were observed between microstructural changes and changes in cognitive function in either region (all p-FDR ≥ 0.721). At baseline, microstructure in both regions was not associated with executive function or global cognition (all p > 0.40).ConclusionThe absence of detectable microstructural changes, despite selective improvements in executive function, indicates that NODDI-derived metrics did not capture structural correlates of the cognitive response to hypoxia-cognition training. Whether this reflects functional neural mechanisms, measurement insensitivity, or the timing of the single follow-up assessment remains to be determined. Future studies should incorporate multiple imaging time points to capture the dynamic trajectories of putative microstructural brain changes.

Evaluation of a Parent Multimedia and Mobile-Based Intervention to Promote Pediatric Oral Health (BeReadyToSmile): Single-Group Pre-Post Feasibility Study

Background: The universal adoption of mobile technologies by households has created an opportunity to provide families with young children with access to high-quality oral health information at convenient times and locations. Using community agencies (eg, Head Start and public health programs) that offer parenting education is an effective approach to reaching families in low-income households. Objective: This study aimed to explore the extent to which a coordinated, in-person oral health prevention intervention, together with an accompanying smartphone app, BeReadyToSmile, is feasible to implement among caregivers of young children. Methods: The BeReadyToSmile program targeted parents of children aged 0 to 6 years attending parenting education classes. This study was designed as a single-group pre-post feasibility study that included quantitative surveys and open-ended feedback. A total of 30 parents attended an in-person session on child oral health and were invited to use the BeReadyToSmile smartphone app. Preintervention and postintervention surveys were administered to assess pediatric oral health knowledge, attitudes toward child toothbrushing, brushing intention, brushing efficacy, program satisfaction, and ease of use. Results: Significant effects were observed on parent-reported pediatric oral health knowledge, attitudes toward brushing, brushing intention, and toothbrushing efficacy. Out of the 30 parents invited to use the BeReadyToSmile app, 1 (3%) completed no sessions and 20 (67%) completed all sessions. Participants rated the app highly on measures of satisfaction and use. We found significant increases in pediatric oral health knowledge (.004), child brushing attitudes and intention (=.01), and parental efficacy regarding child toothbrushing (=.03). Conclusions: Caregivers reported positive experiences with the implementation of BeReadyToSmile, indicating the overall feasibility of delivering oral health prevention to households with young children both in person and through a facilitated smartphone app. Further studies should include a larger and more diverse sample, randomized comparison conditions, and a longer follow-up period to assess outcomes. Trial Registration: ClinicalTrials.gov NCT03637309;
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A Gamified Pain Management Intervention for Adults With Chronic Pain in Mainland China: Single-Arm Pre-Post Pilot Study With Machine Learning Predictive Modeling

Background: The widespread prevalence of chronic pain (CP) significantly impacts daily functioning worldwide. In mainland China, maintaining engagement in biopsychosocial interventions remains challenging. Gamification, designed based on self-determination theory, can enhance motivation, while machine learning (ML) algorithms can assist clinicians in dynamically optimizing pain management. Objective: This study aimed to (1) evaluate the preliminary effectiveness of a gamified pain management (GPM) program on CP and psychological outcomes and (2) identify key factors of significant pain improvements through the application of ML to guide intervention adjustments. Methods: A single-arm, pre-post study was conducted with 16 participants with CP in mainland China, recruited via social media using convenience sampling. Participants engaged in a 10-week web-based GPM intervention consisting of education, physical activities, and gamified elements, including points, avatars, and feedback. Primary outcomes were pain intensity and interference measured by the Brief Pain Inventory. Secondary outcomes included anxiety, depression, and quality of life. Analysis included paired tests, and ML models were trained to predict clinically meaningful pain reductions. Shapley additive explanations, least absolute shrinkage and selection operator regression, association rule mining, and Kaplan-Meier survival analysis were used to identify key predictors and optimal sessions and intervention durations across subgroups. Results: A total of 16 participants were engaged, with a mean age of 27.63 (SD 9.584) years. Results from paired tests reported significant improvements in pain intensity (decreased by 27.3%, 95% CI 1.061 to 3.064; =.001), pain interference (decreased by 27.3%, 95% CI 8.159-17.216; <.001), and psychological distress, including anxiety (=3.538, 95% CI 0.969 to 3.906; =.003) and depression (=4.559, 95% CI 2.230 to 6.145; <.001). The gradient boosting model demonstrated the highest predictive accuracy (area under the curve=0.89 and accuracy=0.82). Least absolute shrinkage and selection operator regression identified session 3 (β=−0.45, 95% CI −0.68 to −0.22; <.001) and session 5 (β=−0.32, 95% CI −0.59 to −0.05; =.02) as most predictive of clinical success, while association rule mining revealed effective session combinations for different patient subgroups. Time-to-event analyses indicated that individuals with low back pain and higher baseline severity required longer intervention durations for improvement (5 wk; =.03). Conclusions: This pilot study presents an innovative method that combines ML with dynamic engagement data from a GPM program during interventions, rather than relying on static baseline data in prior studies. The results show preliminary efficacy and identify specific optimal session combinations and personalized treatment durations for different pain subgroups. These exploratory findings contribute to the field by providing a data-driven method for adaptive, personalized digital health interventions that move beyond one-size-fits-all strategies, potentially enabling clinicians to modify content and dosage to improve engagement and outcomes if validated in larger sample trials. Trial Registration: Chinese Clinical Trial Registry ChiCTR2400094247; https://www.chictr.org.cn/showprojEN.html?proj=245138

Zodasiran for cholesterol and triglyceride lowering in patients with hyperlipidemia: final report of phase 1 basket trial

Nature Medicine, Published online: 07 April 2026; doi:10.1038/s41591-026-04307-8

In a phase 1 basket trial, the small interfering RNA zodasiran, targeting ANGPTL3, lowered triglycerides in patients with severe hypertriglyceridemia and lowered both triglycerides and low-density lipoprotein cholesterol in patients with heterozygous familial hypercholesterolemia.

STAT+: Merck’s experimental HIV prevention pill could be made for less than $5 a year, researchers say

An experimental HIV prevention pill being developed by Merck could be mass produced for less than $5 per patient a year according to a new analysis. Advocates argue the low cost means the company should find it easier to license the drug so that low- and middle-income countries can gain easy access.

The pill, dubbed MK 8527, is currently undergoing a pair of late-stage clinical trials that are expected to determine whether the medicine can lower HIV transmission when given to people at high risk of infection. The results are due in the latter half of 2027, according to separate postings on ClinicalTrials.gov.

Already, the pill is generating considerable interest after Merck released mid-stage results last summer showing its drug holds promise. In addition to being safe and effective, the study found it could protect against infection, a form of prevention known as pre-exposure prophylaxis or PrEP, within 24 hours after being taken. Merck noted the pill works in a novel way.

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STAT+: Pharmalittle: We’re reading about an FDA delay forcing a biotech to close, a Neurocrine deal, and more

Good morning, everyone, and welcome to another working week. We hope the weekend respite was relaxing and invigorating because that oh-too-familiar routine of meetings, deadlines, and the like has returned with a vengeance. You knew this would happen, yes? To cope, we are relying, as always, on cups of stimulation. Our choice today is laced with traces of cocoa. Feel free to join us. Remember, no prescription is required. Meanwhile, here are some tidbits to help you along. Best of luck accomplishing your goals today and, of course, do keep in touch. …

In February, a small biotech company called Kezar Life Sciences reached a breakthrough with the U.S. Food and Drug Administration, agreeing to a plan for a clinical trial it hoped could lead to the approval of its treatment for a rare, debilitating liver disease called autoimmune hepatitis. The problem: The agreement came four months too late, STAT explains. The meeting to discuss trial design, a critical step in the drug development process, had been scheduled for last October. But the FDA abruptly canceled it without explanation. The company could no longer proceed as planned and, without clarity from regulators, its path forward was unclear. Kezar’s investors wanted out, and the biotech was forced to start the process of winding down.

Americans starting weight loss medicines for the first time want lower cost and greater convenience as they consider pills from Novo Nordisk and Eli Lilly, Reuters says, citing seven doctors who specialize in obesity. Novo’s Wegovy pill ​has been on the market since January, while Lilly’s newly approved Foundayo joins the fray this week. Interviews with the specialists show a promising landscape for oral weight loss drugs as ‌the companies compete for share in the fast-changing obesity treatment market that is seen topping $100 billion a year in the next decade. All seven doctors said they had begun prescribing oral Wegovy, and three said they have prescribed the pill to ⁠about 10% of their patients. Of those patients, most are taking a GLP-1 for the first time, rather than switching from injectables, and have not yet reached the highest dose. 

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Isatuximab, carfilzomib, lenalidomide and dexamethasone in newly diagnosed multiple myeloma: a randomized phase 3 trial

Nature Medicine, Published online: 06 April 2026; doi:10.1038/s41591-026-04282-0

In the phase 3 EMN24 IsKia trial, transplant-eligible patients with newly diagnosed multiple myeloma who received isatuximab with carfilzomib, lenalidomide and dexamethasone pretransplant induction and post-transplant consolidation showed higher rates of measurable residual disease negativity after consolidation than patients who received carfilzomib, lenalidomide and dexamethasone.

STAT+: How a four-month FDA delay forced a small biotech company to close its doors

In February, a small biotech company called Kezar Life Sciences reached a breakthrough with the Food and Drug Administration, agreeing to a plan for a clinical trial it hoped could lead to the approval of its treatment for a rare, debilitating liver disease called autoimmune hepatitis. The problem: The agreement came four months too late.

The meeting to discuss trial design, a critical step in the drug development process, had been scheduled for last October. But the FDA abruptly canceled it without explanation. The company could no longer proceed as planned and, without clarity from regulators, its path forward was unclear. Kezar’s investors wanted out, and the biotech was forced to start the process of winding down.

It laid off most of its staff of about 60 people. Then, it auctioned off its lab equipment and sold much of its office furniture, except for the table and chairs in one conference room it kept in case the company got its meeting with FDA staff.

Last week — after the meeting and the breakthrough happened — the company said it would be sold. Kezar hopes the buyer, Aurinia Pharmaceuticals, will take the drug forward, though how quickly that can happen, if at all, is not guaranteed.

It’s also not clear why Kezar’s initial meeting was canceled. But to CEO Chris Kirk, the chain of events fits a pattern over the past year in which volatility at the FDA — including staff departures and decision-making seen as inconsistent — has ricocheted across the industry, impacting drugmakers. Those impacts can fall disproportionately on small companies, which, unlike major drugmakers, often operate on one financing to the next. 

“In my career, I’ve often not agreed with what the FDA has said, but I’ve at least relied on their consistency,” said Kirk, who’s worked in biotech for more than two decades. “That doesn’t appear to be what’s happening now. It feels more stochastic and maybe even capricious, what’s going on at the FDA. And this isn’t good for patients. It’s definitely not good for the biotech ecosystem as a whole.”

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