Writing & StyleStyle guide

Pharmacologic Class (PCLASS) in FDA SEND Trial Summary Data

In the June 2026 FDA Study Data Technical Conformance Guide, PCLASS is the Trial Summary parameter code for Pharmacologic Class; FDA lists it as desired for nonclinical Trial Summary data. This is FDA submission guidance, not a universal SEND rule detached from the current FDA-supported standards and conformance guide.

Quick answer

For FDA nonclinical SEND Trial Summary data, use PCLASS for Pharmacologic Class; FDA marks this parameter as desired.

Key details

Core IssueIn the June 2026 FDA Study Data Technical Conformance Guide, PCLASS is the Trial Summary parameter code for Pharmacologic Class; FDA lists it as desired for nonclinical Trial Summary data.
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Important caveats

Scope Boundary

This page is narrowly scoped to the June 2026 FDA technical-conformance table for nonclinical Trial Summary parameters; recheck current FDA guidance and supported standards before relying on version-sensitive submission requirements.

Further guidance

Content

For FDA nonclinical SEND Trial Summary data, use PCLASS for Pharmacologic Class; FDA marks this parameter as desired.

Purpose

Represent Pharmacologic Class in the nonclinical TS dataset with the current FDA-desired parameter code PCLASS, following the applicable supported SEND implementation guide and controlled terminology.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Study Data Technical Conformance Guide - Technical Specifications Document (opens in a new tab)U.S. Food and Drug Administration · Current FDA technical specifications for standardized clinical and nonclinical study-data submissions, including reviewer guides, datasets and eCTD organization.

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