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Archive

This is a library of Lhasa's blog articles. 

  • Using existing data better, relying less on animal testing
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    Using existing data better and relying less on animal testing

    I recently read that by 2025, 36% of world data will be healthcare data. (Yes, thirty-six percent!). Considering this statistic, now more than ever, it is important that we are working to ensure existing data is utilised to make better safety assessment decisions more quickly - whilst also relying less on animal testing.

    04 August 2022

  • Supporting N nitrosamine risk assessments for drug products
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    Supporting N-nitrosamine risk assessments for drug products

    N-Nitrosamine risk assessment and control have become an integral part of pharmaceutical drug product development. In this article, we discuss 3 key stages of risk assessment: identifying the source of risk, determining the level of activity and mitigating the risk. Discover how our in silico tools can be used to support informed decision making on chemical safety, in this blog article.

     

    25 July 2022

  • 5 things you should know about the data in the Lhasa Carcinogenicity Database (LCDB)
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    5 things you should know about the data in the Lhasa Carcinogenicity Database (LCDB)

    Would your toxicology assessments benefit from free access to long-term carcinogenicity study data? The Lhasa Carcinogenicity Database (LCDB) is a widely used, free resource of long-term carcinogenicity study data.

    In this article we explore 5 things you should know about the data in the LCDB.

    25 May 2022

  • Expert review blog
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    Is expert review an essential step when assessing mutagenic potential of drug impurities?

    A provision for the application of ‘expert knowledge’ is mentioned within the ICH M7 guideline. However, as (Q)SAR models continue to be updated and their predictive performance and structural coverage improves, this raises the question of whether expert review is still necessary… 

    05 May 2022

  • Controlling potentially mutagenic impurities – 8 top tips from industry experts
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    Controlling potentially mutagenic impurities – 8 top tips from industry experts

    A key consideration within drug substance synthesis is the potential presence of mutagenic impurities. Potentially mutagenic impurities (PMIs) often arise from reagents which are essential for the synthesis of a final active pharmaceutical ingredient (API) meaning that the risk is therefore often unavoidable. As a result, there is a need to assess the risk posed by mutagenic impurities.
    To discuss this topic in more detail, we were delighted to welcome Andrew Teasdale PhD and Muzaffar Khan PhD, to present at our webinar; Controlling potentially mutagenic impurities - hear from industry experts!

    In case you missed this event, we have summarised the top eight take away tips from the webinar, for quick and easy consumption within this article. 

    04 April 2022

  • Replace reduce refine
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    Replace, Reduce, Refine - How Lhasa Limited are supporting the 3Rs

    Last year, a revolutionary guideline on Defined Approaches for Skin Sensitisation (OECD GL No.497) was released by the OECD. It is the first ever guideline that recommends the use of a combination of non-animal methods to predict whether a chemical can cause skin allergies. Since the publication of this guideline, Lhasa Limited have developed ‘Skin Sensitisation Defined Approach ITSv1 1.0’ – a web application containing one of the defined approaches published by the OECD, which provides hazard and potency skin sensitisation predictions without the use of animal tests. This tool is a step towards full replacement of animal testing for skin sensitisation and employs the 3Rs principle.

    02 March 2022

  • Picture of blue pills, tablets, caplets
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    Nitrites in Excipients Data Sharing Consortium: Supporting Nitrosamine Risk Assessment

    Nitrite analysis of excipients is a new and analytically challenging area, with many organisations working quickly to determine the best practice and techniques to use.

    The Nitrites in Excipients data sharing consortium was established in September 2020 and is part of Lhasa Limited's effort to support the global challenge of nitrosamine risk assessment.

    22 February 2022

  • Predicting N-nitrosamine carcinogenic potency using structure-activity relationships (SARs)
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    Predicting N-nitrosamine carcinogenic potency using structure-activity relationships (SARs)

    This blog article introduces an insightful publication by Lhasa Principal Scientist, Dr. David Ponting and Dr. Kevin Cross from Instem, which investigates whether improvements in structure-activity relationships can more accurately predict N-nitrosamine carcinogenic potency.

    17 December 2021

  • How Derek Nexus and Sarah Nexus meet the 5 OECD principles
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    How Derek Nexus and Sarah Nexus meet the 5 OECD principles

    In this article, we discuss how Derek Nexus and Sarah Nexus meet the 5 OECD principles.

    30 November 2021

  • Meeting ICH S1 and reducing animal testing through AOPs; Have you read this?
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    Meeting ICH S1 and reducing animal testing through AOPs; Have you read this?

    “As Adverse Outcome Pathways (AOPs) move from being an interesting scientific concept, to a useful practical application tool, this is an exciting time for both industry and Lhasa” … Regular Lhasa blog readers will have read this statement within our September blog “Shaping Lhasa Limited’s scientific direction through collaboration”.

    It is with great excitement that this month we can provide you with another pioneering update on the topic of our AOP work; Our paper, “Employing an adverse outcome pathway framework for weight-of-evidence assessment with application to the ICH S1B guidance addendum” has now been published in the Regulatory Toxicology and Pharmacology Journal!

    03 November 2021

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