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Round up: New insulin delivery technology supports healthier pregnancies and more

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Femtech World explores the latest research and technology developments in the world of women’s health.

New insulin delivery technology supports healthier pregnancies

An international study has found new insulin delivery technology helps control glucose levels during pregnancy for those with Type 1 diabetes, which is crucial to the health of women and their newborns.

The technology, known as automated insulin delivery (AID), mimics a healthy pancreas. The system automatically adjusts the amount of insulin given by a pump in real-time, based on current and predicted glucose levels.

In a multicenter clinical trial, the researchers evaluated the impact of a hybrid closed-loop (HCL) insulin therapy treatment regime with standard insulin injections or an insulin pump that was not automated, along with continuous glucose monitoring.

“Keeping blood glucose in the optimal range for pregnancy is exceptionally challenging when someone has Type 1 diabetes, despite their best efforts and the support of dedicated health care clinics,” says Dr Denice Feig, MD, the study’s other co-principal investigator. 

Risks associated with Type 1 diabetes in pregnancy can include increased chances of miscarriage, preeclampsia, which involves dangerous spike in blood pressure, and other significant health concerns. 

Newborns of pregnant women with Type 1 diabetes are more likely to be born excessively large or early and have low blood glucose at birth and are at higher risk of birth defects.

“The study found this AID system worked in pregnancy.

“It resulted in a three hours per day improvement in the time spent in the desired glucose range compared to the standard delivery with insulin injections or regular insulin pumps,” says Donovan. 

“This is very important because we have learned from other larger studies that every 72 minute per day increase, with glucose in the desired range during pregnancy, is associated with reduction in newborn complications.”

The AID system used in the study is known as a Tandem t:slim X2 insulin pump with Control-IQ technology.

The study found those using the AID spent more time in a healthy glucose level range and less time below and above the healthy range.

The improvement in blood sugar control was immediate and persisted throughout the pregnancy. These results were found at all 14 sites involved in the trial.

Widely-used technique for assessing IVF embryos may be flawed

A test deployed in many fertility clinics to assess the viability of embryos for use in IVF is likely to overestimate the number of embryos with abnormalities, a new study has suggested.

Using a new technique for imaging embryos in real time, a team led by scientists at the Loke Centre for Trophoblast Research, University of Cambridge, showed that abnormalities can arise at a later stage of embryo development than previously thought. 

This means that the tests used in some clinics may be finding errors in cells that will go on to develop into the placenta – and abnormalities in placental cells are less likely to affect the health of the fetus.

When abnormalities are detected, the embryo may be deemed inviable and discarded, meaning patients may need to go through another cycle of treatment, which can prove costly.

So-called pre-implantation genetic testing for aneuploidy is a treatment ‘add on’ that may be offered to older women and those with a history of recurrent miscarriages or multiple IVF failures.

Researchers at the Loke Centre for Trophoblast Research, Cambridge, are interested in how early human embryos develop before implantation in the womb.

This is because in assisted conception, as many as nine in ten embryos fail to develop to a stage where they can be transferred to the womb.

To help understand development of the embryo at this early stage, Professor Niakan and colleagues, in collaboration with researchers at the Francis Crick Institute, developed a new, state-of-the-art method for watching embryos live in high resolution. 

The new imaging technique involves tagging DNA inside the cell nucleus with a fluorescent protein, making it visible under a microscope.

The researchers then use an imaging technique known as light-sheet microscopy to observe the embryos in 3D as they developed without damaging them.

Of the 13 embryos analysed by the team, 10 per cent of the cells contained chromosomal abnormalities.

These arose from problems when DNA was being copied between cells, for example when chromosomes did not move properly during division or when a cell divides into three, rather than two.

Because these abnormalities arise at a relatively late stage of the embryo’s development, they appear in the outer layer of the blastocyst, which develops into the placenta – and it is from this layer that biopsies are taken for pre-genetic testing for aneuploidy.

Professor Niakan’s team is now studying cells in the inner layer to see whether such spontaneous abnormalities can also arise there.

In mice, fertility treatments linked to higher mutations than natural conception

Mice pups conceived with IVF in the lab have slightly increased rates of DNA errors, or mutations, compared to pups conceived naturally.

While the results from this new study do not directly apply to humans, they highlight the importance of understanding how fertility treatments affect an offspring’s DNA. 

For the study, the researchers compared genome sequences of lab mice conceived naturally and mice conceived through assisted reproductive technologies, including hormone treatments, IVF, and embryo transfer. 

They discovered pups born through these fertility treatments had about 30 per cent more new single-nucleotide variants, or tiny changes in DNA sequences.

Nucleotides are DNA’s building blocks or “letters.”

Arranged in specific sequences, these letters compose the instructions cells use to grow and function.

Single-nucleotide variants are simply genetic differences (or mutations) involving a change in just one DNA letter. They can occur when cells replicate their DNA.

The mutations observed in the study are unlikely to be harmful.

Scientists estimate that fewer than 2 per cent of new mutations arising in a genome are deleterious or have an impact on an individual’s phenotype or disease susceptibility.

The mutations appeared spread across the genome, rather than clustered in particular genes.

The timing of when these new mutations appeared in early embryos also looked similar between fertility-treated and natural groups, implying that fertility treatment increases the overall chance of new DNA changes but does not impact when they occur during development.

Even with a 30 per cent increase in new mutations, the absolute number of harmful new mutations per mouse remains low. 

For about every 50 mice conceived with IVF, scientists expect roughly one additional harmful DNA change compared to natural conception.

That is one problematic change out of many possible ones, since the mouse genome is about 2.7 billion DNA letters long. 

A similar effect is expected if the male parent’s age increased by about 30 weeks, the researchers explained, since paternal age is a major driver of mutation rates in mammals.

The biological mechanisms underlying these genetic changes are not clear.

Further research is needed to study whether the new mutations come from a specific step in the IVF process or from the combined effects of several steps. 

One possible factor is the use of hormone treatments that stimulate the ovaries, since these hormones push eggs to restart meiosis, a stage of cell division known to be prone to mistakes.

Other aspects of the fertility treatment protocol could also play a role, such as physical handling of embryos or the chemical conditions of the lab culture environment.

The study does not show whether the same effect happens in humans. Fertility procedures vary between mice and humans, and both have different reproductive biology.

For example, mice do not menstruate. Also, people seeking IVF will likely encounter environmental factors that may already have affected their genetics.

Pregnancy

More than half of women with gestational diabetes face harmful stigma, research reveals

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More than half of women with gestational diabetes report stigma from healthcare staff, family, friends and wider society, new research shows.

A survey of 1,800 UK women found widespread emotional distress at diagnosis of the condition, a form of high blood sugar that develops during pregnancy, with effects lasting beyond birth.

Gestational diabetes affects around one in 20 pregnancies in the UK, and the findings highlight the wider toll on women diagnosed with the condition.

The study was funded by Diabetes UK and led by researchers at King’s College London and University College Cork.

Dr Elizabeth Robertson, director of research and clinical at Diabetes UK, said: “Stigma can have a dangerous and devastating impact on pregnant women diagnosed with gestational diabetes, particularly at a time when emotions and anxieties may already be heightened.

“We know that stigma can lead to shame, isolation and poorer mental health, and may discourage people from attending healthcare appointments, potentially increasing the risk of serious complications.

“This research highlights the urgent need for better support systems, based on understanding and empathy to ensure no one feels blamed or judged during their pregnancy.”

More than two-thirds of women, 68 per cent, reported anxiety at diagnosis, while 58 per cent felt upset and 48 per cent experienced fear.

The psychological impact continued beyond birth, with 61 per cent saying the condition negatively affected their feelings about future pregnancies.

Nearly half of women, 49 per cent, felt judged for having gestational diabetes, while 47 per cent felt judged because of their body size.

More than 80 per cent felt other people did not understand gestational diabetes, and more than a third, 36 per cent, concealed their diagnosis from others.

Gestational diabetes stigma was also common in healthcare settings, with 48 per cent reporting that professionals made assumptions about their diet and exercise, and more than half, 52 per cent, feeling judged based on their blood glucose results.

Many women described a loss of control and a sense of disruption during pregnancy.

Nearly two-thirds, 64 per cent, felt they were denied a normal pregnancy, while 76 per cent reported a lack of control over their pregnancy.

More than a third, 36 per cent, felt abandoned by healthcare services after giving birth, and one in four, 25 per cent, continued to experience depression or anxiety postpartum.

Focus group participants described harmful stereotypes, including assumptions that they were ‘lazy’, had ‘poor eating habits’ or ‘lacked willpower’.

Comments from family and friends included remarks such as “should you be eating that?” and “you must have eaten too much, that’s why you have gestational diabetes.”

The researchers are calling for targeted interventions alongside structured emotional support for women during and after pregnancies affected by gestational diabetes, to improve both mental and physical health outcomes.

Professor Angus Forbes, lead researcher from King’s College London, said: “Stigma and emotional distress are far more common in women diagnosed with gestational diabetes than many realise.

“Everyday interactions, even with those who mean well, can deepen this harm, shaping women’s emotional wellbeing and the choices they feel able to make.

“It’s clear that meaningful action is needed to protect women’s mental and physical health.”

Risk factors for gestational diabetes include living with overweight or obesity, having a family history of type 2 diabetes, and being from a South Asian, Black or African Caribbean or Middle Eastern background.

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Pregnancy

NIPT or NT scan? Why the 2026 evidence supports doing Both

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Article produced in association with London Pregnancy Clinic

One of the most common questions in early pregnancy: NIPT or the nuchal translucency (NT) scan – do I really need both? The 2026 evidence gives a clear answer.

The two tests look at different things, and doing them together is how first-trimester screening works at its best.

This is not a debate between old and new technology. NIPT is a genuine advance in detecting chromosome abnormalities from a maternal blood sample.

The NT scan is the first detailed look at how the fetus is forming. What each sees, the other largely cannot.

What NIPT actually tells you

NIPT – non-invasive prenatal testing – analyses fragments of fetal DNA circulating in the mother’s blood. Taken from around 10 weeks, the test measures chromosome proportions to flag the common trisomies: trisomy 21 (Down syndrome), trisomy 18 (Edwards) and trisomy 13 (Patau).

Most panels include fetal sex and sex-chromosome aneuploidies. Extended NIPT adds selected microdeletion syndromes – most commonly 22q11.2 (DiGeorge syndrome) – and the newest whole-genome platforms can detect copy-number variants down to around 1 Mb across every chromosome.

What NIPT does not look at is anatomy. It tells you whether the chromosomes are numerically correct.

It cannot tell you how the heart, brain, spine, kidneys or abdominal wall are forming, because it analyses DNA, not structure.

The NHS offers NIPT as a second-line screening test, reserved for women who receive a higher-chance result from the combined test – precisely because NIPT is best understood as one part of a wider screening picture rather than the whole of it.

What the NT scan actually tells you

The NT scan is an ultrasound performed at 11 to 14 weeks that measures the nuchal translucency – a small fluid-filled space at the back of the fetal neck.

Protocols developed by the Fetal Medicine Foundation, the group that pioneered first-trimester screening under Professor Kypros Nicolaides at King’s College Hospital, combine the NT measurement with additional markers: nasal bone, ductus venosus flow, tricuspid regurgitation, and maternal serum biomarkers (PAPP-A and free β-hCG).

More importantly, the scan is the first structural assessment of the fetus.

Major anomalies already visible at 11-14 weeks include absence of the cranial vault, large body-wall defects such as omphalocele and gastroschisis, megacystis, severe cardiac defects with abnormal four-chamber views, and skeletal dysplasias.

An increased NT measurement itself – even with a completely normal chromosome result – is associated with a notable rate of structural heart defects and monogenic syndromes that NIPT cannot detect.

Why the combination outperforms either test alone

Taken together, NIPT and the NT scan give complementary coverage.

For the common trisomies, NIPT is more sensitive than the NT scan alone. Pooled data place detection of trisomy 21 above 99 per cent with a false-positive rate around 0.1 per cent.

Combined first-trimester screening without NIPT, using NT and serum markers alone, reaches approximately 90 per cent detection – and up to 95 per cent when nasal bone, ductus venosus and tricuspid flow are added – at a 3 to 5 per cent false-positive rate.

For that specific endpoint, NIPT is the more accurate test.

The NT scan picks up almost everything NIPT misses: structural anomalies, early markers of monogenic syndromes, confirmation of viability, accurate dating, twin chorionicity, and placental position.

An increased NT with a normal NIPT result shifts the clinical conversation toward syndromes like Noonan, Kabuki and the skeletal dysplasias – conditions with single-gene origins rather than chromosomal ones.

Working out which is which often requires genetic testing beyond NIPT. Carrier screening and expanded genetic panels – including those offered at Jeen Health – cover the single-gene territory that NIPT does not address.

When the combination matters most

Several patient groups have most to gain from doing both:

  • Women conceiving after IVF or with donor gametes, where maternal age and fertility treatment each subtly shift risk profiles
  • Women aged 35 and over, where baseline chromosomal risk is higher and soft markers are more likely
  • Anyone with a previous pregnancy affected by an anomaly or loss, where reassurance matters
  • Twin pregnancies, where NIPT performance depends on fetal fraction and structural assessment is more complex
  • Women who have had a raised or borderline result on earlier screening markers

Chromosomes and anatomy are two separate clinical questions. Each needs its own answer.

What happens if the tests disagree

Disagreements between NIPT and the NT scan are not failures of either test – they are the reason both are done.

  • NIPT low-risk, NT raised: consider monogenic syndromes, structural cardiac assessment, and early anomaly ultrasound follow-up
  • NIPT higher-chance, scan normal: confirmatory diagnostic testing (CVS or amniocentesis) before any major decision
  • NIPT no-call: repeat sampling, gestational age check and clinical review – a no-call itself is associated with an increased chromosomal risk
  • Both abnormal: a clear indication for specialist fetal medicine review and early diagnostic testing

Professional guidance from the RCOG supports this complementary approach, emphasising that NIPT is a screening rather than a diagnostic test, and that its results are most useful when interpreted alongside ultrasound findings.

Practical guidance for 2026

The most efficient way to run both tests is in a single appointment window, between 10 and 14 weeks, with the blood sample taken first and the scan performed on the same visit.

Results typically return within 5 to 10 working days for standard NIPT panels, and same-day for the scan itself.

This is the logic behind the SMART Test at London Pregnancy Clinic – extended NIPT paired with a full first-trimester ultrasound in a single appointment, delivering both chromosomal and structural information in one visit. For most patients, it removes the false choice of picking one over the other.

The wider picture

The question of NIPT versus NT scan has a settled clinical answer in 2026: the two tests examine different aspects of the pregnancy, and the most complete first-trimester assessment uses both.

For a pregnancy a woman wants to carry with the fullest possible picture, both tests belong in the first-trimester window. The question worth asking is which clinic offers them together, with the pre- and post-test care that makes the results usable.

If you are deciding on first-trimester screening, a consultation with a fetal medicine specialist is the most useful first step.

Disclaimer: This article is produced for informational purposes only and does not constitute medical advice, diagnosis or treatment. Clinical guidance referenced reflects published NHS, Fetal Medicine Foundation and RCOG standards as at April 2026. Individual circumstances vary; readers are advised to consult a qualified healthcare professional before acting on any information in this article. This piece was produced in association with London Pregnancy Clinic, which provided background clinical information for editorial purposes. Hyperlinks to external sources are included for reference only and do not represent an endorsement of any product, service or organisation.

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Diagnosis

New meta-analysis further supports low re-excisions and high placement accuracy with the Magseed marker

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An independent meta-analysis from January 2026, pooling 2,117 patients and 2,176 Magseed marker placements, has reported low re-excision rates (8.2%) and low positive margins (7.6%) when the marker is used to localise non-palpable breast lesions prior to breast‑conserving surgery (BCS).

Al Darwashi et al. (2026) pooled 16 studies to evaluate safety and efficacy outcomes when the Magseed marker was used for preoperative localisation of non-palpable lesions prior to BCS.

The authors reported high placement accuracy, reliable intraoperative retrieval and low rates of positive margins, re-excisions and complications.

In a cohort cited by the review, Moreno‑Palacios et al. (2024) also observed that Magseed marker facilitates less extensive resections compared to guidewires, promising improved cosmetic outcomes while maintaining oncological efficacy.

The key findings

Low re-operation burden: Positive margins occurred in just 7.6% of cases, and only 8.2% required re-excision across the included series.

High placement accuracy: The success rate for Magseed marker placement showed 99.3% positioned within 10 mm of the lesion.

Of note, 96.6% of Magseed markers were placed within an even stricter 5 mm radius.

Reliable retrieval: The pooled intraoperative retrieval success was 99.6% for the Magseed® marker.

“This meta-analysis demonstrated Magseed as a safe and effective preoperative localisation technique for BCS in the management of selected non-palpable breast lesions.” Al Darwashi et al. (2026)

Ready to find out more about the Magseed marker and the Sentimag system?

→ Speak to a Magseed marker expert

→ Read the full paper here

Magseed® is a trademark of Hologic, Inc. or its subsidiaries in the United States or other countries. Intended for medical professionals and use in the U.S., UK and the EU only.

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