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Archive for the ‘CTD’ Category

FDA Reviewer Survey: CTD/eCTD Quality

posted by Kathie Clark @ 5:27 PM
Monday, June 28, 2010

Dr. Sarah Connelly, FDA clinical reviewer and Medical Officer, Division of Antiviral Products, presented some interesting and useful survey results at the DIA Annual Meeting on June 16th.  The survey gathered information on FDA reviewers’ perception of submission quality in a number of specific areas.  It was a collaboration between FDA and the DIA Medical Writers SIAC.

The survey is hot off the presses, having been completed in early June.  It was designed to assess:

  • Quality of writing
  • Organization
  • Completeness of presented information
  • Adequacy of cross-referencing

Responses were tabulated specifically in the CMC/Quality, Nonclinical and Clinical areas.  About 53 reviewers responded.

CMC

In CMC, overall writing quality was rated fairly highly: at about 12% poor or fair, 42% average, and 46% good or excellent.  However, 17% judged organization or information as poor or fair, and 31% considered completeness of information poor or fair.  The worst ratings were given to adequacy of cross-references (with 38% rating fair or poor) and adequacy of bookmarks and bookmark names (32% rating fair or poor).  .

In the area of M2 summaries, 19% rated quality as fair or poor, 52% as average, and 29% as good or excellent.

In comments, reviewers highlighted the following issues:

  • Documents that lack cohesion and that are sometimes just collections of uninterrupted data
  • Too many small files with little content (e.g., excipient documents)
  • Poor leaf titles

Nonclinical

In the nonclinical area, overall writing quality was rated at about 28% poor or fair, 34% average, and 37% good or excellent.  Somewhat higher ratings were given to organization and completeness of information.  The worst ratings again were given to adequacy of cross-references (with 46% rating fair or poor) and adequacy of bookmarks and bookmark names (52% rating fair or poor).  This is not surprising considering the quantity of scanned documents presented by sponsors in nonclinical, and the reluctance of sponsors to spend time enhancing the navigation aids in these documents.

In the area of M2 summaries, 29% rated quality as fair or poor, 40% as average, and 31% as good or excellent.

In comments, reviewers highlighted the following issues:

  • Repetition: often paragraphs just re-state what is shown in tables with no useful interpretation.  Often the same data will or information will be reproduced in a number of places
  • Uninterrupted raw data: summary data and interpretation is often inadequate or not provided at all
  • Lack of context and flow: regulatory background for nonclinical program not discussed, missing reports not explained

Clinical

In the clinical area, ratings were generally higher – not surprising again as most sponsors have a larger budget and an in-house or contracted staff of professional medical writers producing clinical documents.  Quality of clinical studies in general was reasonably good, with 22% considering reports poor or fair, 36% average, and 42% poor.

Overall writing quality was rated at about 15% poor or fair, 35% average, and 43% good or excellent.  Similar ratings were given to completeness of information, and  few reviewers had complaints about organization (possibly due to the adoption of E3 as a standard for clinical study reports).  The worst ratings were given to adequacy of cross-references (with 27% rating fair or poor) and adequacy of bookmarks and bookmark names (35% rating fair or poor).

In the area of M3 summaries, 17% rated quality as fair or poor, 39% as average, and 42% as good or excellent.  ISS and ISE were a little less satisfactory.

In comments, clinical reviewers mentioned similar issues repetition (including cutting and pasting into summaries), lack of interpretation, non-searchable documents, and inadequate narrative summaries.  They also mentioned lack of hyperlinks and difficulty in finding information.  On a somewhat harsher note, some reviewers believe that the people writing clinical summaries don’t understand the science.

Summary

There are certainly some significant trends in the feedback from reviewers – poor quality bookmarking and hyperlinking, repetition, and lack of summary and interpretation being the most consistent.  Something that struck me was the lack of “excellent” ratings – only one area reached as high as 10% and most were well below that.  I interpret that as meaning almost all sponsors have some room for improvement.   This is a great opportunity to review your practices and see where you might not be meeting the reviewers’ expectations.  After all, impeding the reviewers in making their assessments is a major contributor to complete response.

I’m going to deviate from my usual approach of not mentioning my company’s product s and services to mention that our soon-to-be-released GlobalSubmit 2010 release has significant enhancements in support of the quality of PDF documents, bookmarks and hyperlinks.  Not only will we identify over 40 PDF-related errors at the validation stage, but our new CrossCheckTM product provides a revolutionary way to QC bookmarks and hyperlinks without having to open target documents.  Our clients who have previewed CrossCheck view it as a real productivity boost.  For further information or a demo, contact sales@globalsubmit.com.

Finally, Dr. Connolly’s presentation, CTD/eCTD Quality: FDA Survey Results is available on GlobalSubmit’s presentation page.

ICH meeting update

posted by Jason Rock @ 6:00 PM
Wednesday, June 17, 2009

Last week I was at the ICH meeting in Japan. If you haven’t been to Japan, I highly recommend a visit to this beautiful country and its very friendly people.

We had a productive meeting. My time was split between working on eCTD and ICSR. The eCTD group focused on change requests and requirements for the next major version. While there were no significant changes made, we are working hard to include Module 3 Q&A as soon as possible. The change request will be posted to the ICH website in the near future.

One of the things the group focused on was reviewing which PDF version can be accepted by all parties. There were no changes to the PDF 1.4 recommendation, but all parties agreed to determine the feasibility of endorsing the ISO32000 PDF version soon. That said, it’s a very real possibility that ISO32000 PDF will be endorsed at the October 2009 meeting. We are also looking at using XML as a replacement for PDF. Do not expect that change any time soon.

The group also made tremendous progress in determining ICH requirements for the next major version of eCTD. Since we did not complete said requirements however, I would fully expect that ICH will officially participate in the RPS standard after the October 2009 meeting.

In the margins of the meeting – meaning at the hotel bar –differences between US and European submission were discussed. I learned, for instance, that original marketing applications in the US are typically five to 10 times larger in page count and file size than European submissions. I also found out that there is a 10+ multiple in the number of amendments found in the average US submissions when compared to a similar European submission. In fact, one sponsor said that a drug approved in Europe had four sequences, while the same drug in the US had 78 sequences.  Now that’s something to think about.

Australia Re-Releases M1 Guidance for CTD

posted by Kathie Clark @ 11:35 PM
Tuesday, January 27, 2009

In my last post, I mentioned new TGA eCTD information.  TGA has also updated CTD module 1 guidance.

The TGA has released a new version of Module 1: Administrative Information and Prescribing Information For Australia, dated November 2008. Fortunately this agency includes a nice Document Change Record at the beginning of the document. Changes include:

  • References to TGA organisation and titles updated
  •  Text amended to reflect changes in GMP clearance for prescription medicines as a result of the introduction of TGA eBusiness Services (Part B Module 1.7)
  • Addition of Module 1.13 Information relating to Pharmacovigilance (Part B Module 1.13)

Module 1.13 is entirely new. It consists of a Risk Management Plan for Australia, as outlined in Chapter 1.3 of EudraLex Volume 9A – Pharmacovigilance for Medicinal Products for Human Use (version September 2008).

Changes to CTD Guidance in Europe

posted by Kathie Clark @ 3:16 AM
Saturday, July 5, 2008
Recently, a new edition of “Volume 2B Notice to Applicants: Medicinal products for human use: Presentation and format of the dossier Common Technical Document (CTD)”, Edition May 2008 (http://ec.europa.eu/enterprise/pharmaceuticals/eudralex/vol-2/b/update_200805/ctd_05-2008.pdf) was posted on EudraLex. This replaces the June 2006 edition.

In addition to updates and correction of references, the main changes in the Notice to Applicants are:

  • Addition of 1.10 Paediatrics section
  • Addition of a table to M1 for generics: OVERVIEW OF THE CHOSEN REFERENCE PRODUCT FOR COMPARABILITY
  • Clarification on “report justifying that the application concerns a new therapeutic indication and that significant preclinical or clinical studies have been carried out in relation to this new indication” to be placed in 1.5.3 (Extended) Data / Market Exclusivity as needed.

Application forms were also re-issued - see http://ec.europa.eu/enterprise/pharmaceuticals/eudralex/vol2_en.htm#2b.

Next posting will examine related changes to the EU M1 specification.

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