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Sunday 7 September 2014

SOP: who and how?


Documentation requirements have been emphasized time and again in the previous posts with reference to regulatory expectations, product and process requirements, process design and process validation etc. Starting from this post we will systematically start developing a pharma/biopharma documentation system.

A good documentation system shall emphasize on:
          Traceability
          Clarity
          Applicability
          Process based approach

The core of documentation system is written procedures which shall meet the above four requirements. Procedures can be in the form of protocols, instructions, manuals etc. However, SOP (Standard Operating Procedure) is a universally acceptable form of written procedure. In documentation system everything roots to SOP. In fact SOP on SOP is the first document in documentation list.

Parts of SOP:

Conceptually SOP is divided into two parts:

          Instructions: A stepwise instructions to perform a task

          Record Forms: Generally provided as annexure to record pre-activity, activity and post activity data. If not included as an annexure to SOP, the SOP shall have a reference of where to record the data of activity such as logbook or other associated record form. For example, a production process SOP shall have the reference to BMR Number/ Section where the data shall be recorded and BMR shall have reference number of SOP followed to execute the step (two way traceability).

Who writes SOP?

While drafting a SOP process based approach shall be adopted. Remember it is a good process which makes a good product which meets or exceed the quality requirements.

There has been too much Quality Assurance influence or interference in development of a quality documentation system which mostly end up overlooking the process and overdoing the clerical. This leads to non compliance in future and source of warning letters due to process not documented properly or followed properly. Remember all the noncompliances are either for process or product and its better to leave process, product and documentation to manufacturing and quality control departments; they are the experts in their field not QA documentation manager. In fact having a Quality Assurance department is not a direct regulatory requirement, policing can never ensure quality; quality should be integrated in the system and is responsibility of the process owner.  

If we break down Quality Assurance department into sub-functions we can very well see the fact:
Quality Assurance
Sub departments
Functions
Actual Responsibility
Change control
Manages changes in process and facility
Process and facility owner (such as manufacturing, QC, Warehouse etc)
CAPA
Manages corrective and preventive actions in processes
Process owner shall plan and implement CAPA
Deviation and Non Conformance
Manages process deviations and non conformance (OOS)
Process owner, deviation in manufacturing process, Non conformance in QC testing
Audits and Inspections
Manages internal and external audits
Audits are for processes and process owner faces the audit and satisfies compliance
Manufacturing QA/
In process QA
Manages in process activities
Process owner performs the process and QC tests the samples
Trainings
Coordinates training
User department shall aces the training need and subject matter expert impart the training
Documentation Management
Centralized document management, kind of a library
Document belongs to process owner
Validations and Calibrations
Manages validation and calibration
Process owner performs the impact assessment and engineering/ validation expert performs the validation and calibrations
Batch and Lot release
Release of batch
Production manufactures product as per laid down procedures and QC tests and release
There are many fancy sub functions and one can have many but ultimate quality is assured and maintained by process owner.

To have a compliant system the process owner shall be authorized to implement scientific approach to process management and control than just having a bureaucratic or clerical control. The sole purpose of regulatory requirements, pharmacopeal expectations and high level Quality Standards requirements is to have a scientific and knowledge based approach which unfortunately is ignored resulting in non compliance and warning letters.

Instead of Quality Assurance department, a company shall have a quality improvement group of 4 to 5 diversely experience personnel in regulatory, process and testing who perform continuous quality assessment of system and look for gaps and improvement opportunities.

To summarize, in general Quality Assurance department performs only the bureaucratic/ clerical functions and in no way can influence or exceed the quality requirements of the product. In fact the hiring/ recruiting officers shall give precedence to process knowledge and understanding than knowledge of some clerical functions and formalities. The discussion does not advocate throwing Quality Assurance department out of the window but to look more closely to the responsibilities and authorities in a quality management system and awarding them to process owner.

So it is beyond doubt that if document are being created, process owner shall have the responsibility and authority to create the documents. The first page, Approval page of SOP has columns for Prepared by and Reviewed/ Approved by and Authorized by and shall have the following requirements:

     Prepared by: The person who writes the SOP shall have relevant experience in that activity or field and shall have knowledge of the organizational structure.

  Reviewed/Approved by: The person who technically reviews the SOP for completeness shall have a relevant experience in the activity or the field and shall have knowledge of the organizational structure.

     Authorized by: The SOP after the review cycle shall be authorized by Management Representative (or Head Quality) keeping in mind the regulatory requirement and Quality Management System.

Characteristics of Good SOP:

SOP being a method of communication shall have requirements like any other document. As documents have moved from paper to electronic version these requirements become even more important and are discussed below:

Legibility
Readability

Legibility: Legibility is primarily the concern of the typeface designer, to ensure that each individual character or glyph is unambiguous and distinguishable from all other characters in the font. Legibility is also in part the concern of the typographer to select a typeface with appropriate clarity of design for the intended use at the intended size.

Legibility is the degree to which glyphs (individual characters) in text are understandable or recognizable based on appearance. "The legibility of a typeface is related to the characteristics inherent in its design ... which relate to the ability to distinguish one letter from the other." Legibility includes factors such as "x-height, character shapes, stroke contrast, the size of its counters, serifs or lack thereof, and weight. Thanks to office software that we can now easily select a font, font size, line spacing etc. With digital documents in mind it is recommended to use sans-serif fonts (such as Tahoma, Verdana, Lucida Grande, Antique Olive, Calibri, Segoe UI, Myriad, Frutiger, Trebuchet MS etc.) with font size 10 to 12 and heading and subheading scheme. Text shall be preferably left aligned and margins shall be selected based on the binding and filing requirement of the document. All the documents shall have uniform makeup.

Readability: Readability is the ease with which text can be read and understood. Various factors to measure readability have been used, such as "speed of perception," "perceptibility at a distance," "perceptibility in peripheral vision," "visibility," "the reflex blink technique," "rate of work" (e.g., speed of reading), "eye movements," and "fatigue in reading."

A reader should be assisted in navigating around the information with ease, by optimal inter-letter, inter-word and particularly inter-line spacing, coupled with appropriate line length and position on the page, careful editorial “chunking” and choice of the text architecture of titles, folios, and reference links.

This can be achieved by:
1. The sentences must be well formed syntactically
2. The sentences must not exceed a certain length
3. The sentences should not be below a minimum length
4. Recursion must be kept to a minimum
5. The choice of words should vary
For further details see reference 2.

Both these requirements shall be well thought and addressed in the guidance for preparation of the SOP.

References:

1. Wikipedia: Typography (http://en.wikipedia.org/wiki/Typography)

2. Technical Writing made easier, rev. 1.1, March 2002 by Bernhard Spuida, bernhard@icsharpcode.net