Belfast, UK, 9th October 2019 / Sciad NewswireExamen, a world leader in male fertility testing, is pleased to announce the results of its latest study conducted in collaboration with the renowned Lister Fertility Clinic in London. This study demonstrates that the use of COMET parameters in sperm DNA analysis improves the diagnosis of unexplained infertility and the prediction of the outcome of Intracytoplasmic Sperm Injection (ICSI) and In Vitro Fertilisation (IVF), fertility treatments.

Examen’s COMET assay is the underlying technology in the company’s recently rebranded Exact range of tests, which measure the proportion of sperm with low and high DNA damage. Exact tests therefore provide fertility experts insight not currently offered by other fertility tests.

Sperm DNA damage, a leading cause of male infertility, is often insufficiently investigated, leading to under-treatment prior to IVF or ICSI. This reduces the likelihood of success of these treatments and can cause psychological, physical and financial burdens for couples.

Traditional semen analysis, reliant on measurements of quantity, morphology and motility, is less able to discriminate between the sperm quality of fertile and infertile men, hence sperm DNA damage analysis is a more robust biomarker for male infertility. To date this has been effective in predicting the outcome of IVF but not ICSI, which is the first choice Assisted Reproductive Technology (ART) in many countries across Europe.

Examen’s Exact tests accurately measure sperm DNA damage using COMET parameters, to calculate the average level of DNA damage, the proportion of sperm with low DNA damage and the proportion with high DNA damage, respectively. The average COMET score has previously been shown to have a strong correlation with all fertility checkpoints, including live birth rate. This study aimed to establish whether new, more detailed measures of the proportion of sperm with low or high DNA damage improve the power of the test in the diagnosis of male infertility and the prediction of the success of IVF and ICSI.

The results confirm that the additional COMET measurements can be used to assist in the diagnosis of unexplained infertility as well as predicting the success of ICSI. These novel test parameters enable professionals to make more informed clinical decisions, improving fertility treatment outcomes.

Professor Sheena Lewis, CEO of Examen, commented “The results of this study confirm that Exact tests utilising COMET technology to analyse sperm DNA damage are the most accurate male fertility tests currently available, not only for diagnosing male infertility but also in selecting the best treatment option. We are pleased to be able to offer this test to couples and healthcare professionals, providing valuable information which could improve fertility outcomes and ultimately help men become dads.”

Examen’s COMET technology is available via the Exact range of tests, previously known as SpermComet® and marketed as Exact FertilityTM, Exact IVFTM and Exact ICSITM. The Exact tests utilise these novel measurements for the most comprehensive sperm DNA analysis currently available.

For further information please contact Examen Labs:


Notes to Editors:

About Examen
Examen is a world leader in male fertility testing with a heritage of over 25 years in male reproductive health and fertility treatment research. Examen specialises in measuring sperm DNA fragmentation (known as sperm DNA damage) to help predict the likelihood of conception, miscarriage and the success of fertility treatment.

Sperm DNA damage is one of the most important factors causing male infertility. Examen has developed the Exact range of sperm DNA diagnostics tests that empower men to take control of their own fertility.

The Exact tests are powered by Examen’s proprietary COMET technology, previously known as SpermComet®, the most comprehensive sperm DNA analysis currently available and able to deliver an accurate assessment of sperm DNA damage for fertility diagnosis and information that can predict the outcome of IVF and ICSI fertility treatment. The Exact range are the go-to tests for sperm DNA damage in 80% of the UK’s leading fertility clinics.

The founder of Examen is internationally acclaimed academic in male fertility; Professor Sheena Lewis.

For further information, please contact:

Professor Sheena E. M. Lewis BSc PhD CBiol FRSB
T: 02890 329354

Sciad Communications
Juliette Craggs
T: +44 (0)20 3755 0573

Maria Patey
T: +44 (0)20 3755 0571

Further reading

Reference List 

Cissen M, Wely M van, Scholten I, Mansell S, Bruin JP de, Mol BW, et al. Measuring Sperm DNA Fragmentation and Clinical Outcomes of Medically Assisted Reproduction: A Systematic Review and Meta-Analysis. PLoS One. United States;2016;11(11):e0165125.

Dada R. Sperm DNA damage diagnostics: when and why. Translational andrology and urology. 2017;6(Suppl 4):S691-S694.

Human Fertilisation & Embryology Authority. Fertility treatment 2014–2016 trends and figures. 2018.

Lewis SEM, Kumar K. The paternal genome and the health of the assisted reproductive technology child. Asian J Androl [Internet]. 2015;17(4):616.

Simon L, Liu L, Murphy K, Ge S, Hotaling J, Aston KI, et al. Comparative analysis of three sperm DNA damage assays and sperm nuclear protein content in couples undergoing assisted reproduction treatment. Hum Reprod. 2014;29(5):904–17.

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