A trial in motion has its own momentum — and its own vulnerabilities.

Once your study is underway, the design decisions are locked. But the execution decisions aren't. How you handle emerging data quality issues, how you conduct interim analyses, how you respond when enrollment lags — these mid-trial choices can be just as consequential as anything that happened at the design stage.

Most sponsors don't anticipate needing statistical support mid-trial. Then reality sets in.

We stabilize, support, and advance trials in motion.

BSC works with sponsors at every stage of an active trial — whether you've had a statistician from day one and need specialized support, you're inheriting a study that needs fresh eyes, or you're realizing for the first time that you need a statistical partner. We integrate quickly, assess what's working, and provide the expertise needed to keep your trial on track.

Mid-trial, the stakes are high and the margin for error is narrow. We bring the experience and composure to navigate that environment without disrupting momentum.

What we do at this stage

Drawing on our Analyze and Design services, we support:

• Interim analyses — Pre-specified and unplanned interim reviews, DSMB/IDMC packages, stopping rule evaluation, and posterior probability assessments

• Data quality — Identifying and resolving data inconsistencies across sites, reconciling incoming datasets, developing data screening and cleaning protocols

• Enrollment support — Statistical assessment of enrollment trends, simulation modeling for revised timelines, sample size re-estimation where pre-specified

• Protocol amendments — Statistical justification for mid-trial changes, impact assessments on power and analysis populations

• Ongoing statistical oversight — Blinded data review, safety monitoring support, and real-time analytical consultation

The mid-trial window is narrow

Problems that surface mid-trial don't get easier with time. A data quality issue that goes unaddressed compounds across sites and visits. An enrollment shortfall that isn't assessed statistically becomes a power problem at analysis. An interim analysis conducted without the right expertise creates regulatory exposure that's hard to walk back.

The sponsors who navigate active trials successfully are the ones who treat statistical support not as a deliverable at the end, but as an ongoing partnership throughout.

Wherever you are in your trial, we can meet you there.