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Our research and publications

Recent publications

Why PGT-A, most likely, improves IVF success

Actual problems of cytogenomics, organization and evolution of the genomes and chromosomes in birds

Unveiling comparative genomic trajectories of selection and key candidate genes in egg-type Russian White and meat-type White Cornish chickens

Concordance rates between embryonic cell-free DNA and trophectoderm biopsy from fresh and frozen-thawed blastocysts

Retrospective analysis of 479 PGT-SR cycles - analysis of chromosome information and availability of embryos for transfer

The problem of evolutionary subdivision of domestic chickens: implications for synthetic breeds and admixture as assessed by phenotype and genotype

Study of animal myosins in a comparative genomic aspect

Comparative and evolutionary genomics of lancelet, chordates and vertebrate animals

Genetic variation of the NCAPG-LCORL locus in chickens of local breeds based on SNP genotyping data

Comparative analysis of phenotypic traits in various breeds representing the world poultry gene pool

Prospects for producing individuals of predominantly a certain sex in birds

History, breeding, selection and genetics of the Orenburg goat breed

Shell, a naturally engineered egg packaging: Estimated for strength by non-destructive testing for elastic deformation

Evolutionary Subdivision of Domestic Chickens: Implications for Local Breeds as Assessed by Phenotype and Genotype in Comparison to Commercial and Fancy Breeds

Cytogenetic Evidence Clarifies the Phylogeny of the Family Rhynchocyclidae (Aves: Passeriformes)

Let the data do the talking: the need to consider mosaicism during embryo selection

Analysis of multiple chromosomal rearrangements in the genome of Willisornis vidua using BAC-FISH and chromosome painting on a supposed conserved karyotype

Incidence, Reproductive Outcome, and Economic Impact of Reciprocal Translocations in the Domestic Pig

Telomere Distribution in Human Sperm Heads and Its Relation to Sperm Nuclear Morphology: A New Marker for Male Factor Infertility?

What we do

Gross Genomic Changes in Human Gametes and Embryos


Darren performed the world’s first cytogenetic preimplantation genetic testing (PGT) case, and GriffinLab operates a number of research activities with IVF units, such as the London Women’s Clinic and CARE fertility, as well as diagnostics companies including Cooper and Igenomix. GriffinLab played a large role in developing “Karyomapping” – a universal test for the diagnosis of genetic disease in human preimplantation embryos, which has been used to treat >15,000 patients. The lab also addresses questions arising about the incidence and origin of chromosome abnormalities, with many PhD candidates (often  supervised externally) focusing on improving the success of fertility treatments.

Non-Human IVF and Preimplantation Genetic Testing


The lab has established a pig and cattle IVF facility, specifically designed to generate genotyped IVF embryos. The reasons for establishing this facility are twofold: firstly, as a means of improving food production, but secondly as a model to understand human IVF. Through the use of research into optimisation of current protocols for the production of cattle and pig embryos, there is the potential to multiply the offspring of genetically superior animals, that may be more resistant to disease, thus improving the production and selection of more efficient livestock.

Chromosome Screening in Domestic Animals


The lab has established “CytoScreen Solutions” – a cytogenomic screening service for infertility in agricultural species, working in close collaboration with Oxford Gene Technology (Cytocell) in order to develop the bespoke devices that allow for the identification of translocations in pigs and cattle. Future projects include the investigation of pig and cattle sperm DNA damage through screening, karyomapping in pigs and cattle, and the development of training courses in animal and human IVF.


Gene Expression and Poultry


Insights into agricultural technological advances are not limited to just pigs and cattle. Looking at relationships between the genes of immunity, metabolism and the productive traits in laying hens, their nutrition and microbiome of their gastrointestinal tract are of vital importance for progress in the poultry industry sector. Research in this field will help improve poultry production, for improved food security, as well as reducing the risks of human diseases caused by foodborne toxicoinfections – an area of growing importance with the rise of these infections. We are also looking into mathematical modelling of egg shape.

Genome Reconstruction, Evolution & Comparative Cytogenomics of Terrestrial Vertebrates

GriffinLab research is currently focused on generating chromosome-level assemblies in a range of avian, mammalian and reptilian species, which helps to elucidate the role of chromosome evolution. This has even led to the determination of the overall dinosaur karyotype, which provides some insight into why chromosomes of dinosaurs survived extinction events, and emerged as birds. The lab developed a method of taking sub-chromosomal sized scaffold-based assemblies and “upgrading” them to chromosome-level at a fraction of the typical cost, which uses clones that will hybridise to the chromosomes of multiple species, and multiplex adaptations of FISH.

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