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Narrative review on managing hypertriglyceridemia in pregnancy, including olezarsen and volanesorsenHigh Triglycerides In Pregnancy Need New Safe Drug Options Soon

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Key Takeaway
Consider that safety of olezarsen and volanesorsen in pregnancy is not established, with limited pharmacologic options.

This is a narrative review that synthesizes evidence on managing hypertriglyceridemia in pregnant women. The scope includes conditions such as preeclampsia, gestational hypertension, acute pancreatitis, and familial chylomicronemia syndrome, and interventions like low-fat diet, weight optimization, physical activity, pharmacotherapy, therapeutic plasma exchange, olezarsen, and volanesorsen.

The authors note that triglyceride levels can increase by 100–300% compared with pre-pregnancy values. They also report that interventions can lower triglyceride levels by 40–70%. The review links higher triglyceride levels to maternal disorders and adverse fetal outcomes, though it cautions that triglyceride elevation alone does not necessarily increase complication risk.

Key limitations include limited pharmacologic options and the need to ensure fetal safety. Safety in pregnancy is not established for olezarsen; two case reports describe successful and safe use of volanesorsen. The authors acknowledge gaps in evidence and emphasize early risk identification and individualized treatment.

Practice relevance highlights first-trimester lipid assessment and alignment with updated ESC/EAS guidelines. The review does not report specific study populations, sample sizes, or adverse event rates, and it does not establish causality.

Your body changes a lot when you carry a baby. It stores more fat to feed the growing child. This is normal and usually helpful. But sometimes the fat levels get too high.

Triglycerides are a type of fat in your blood. They rise naturally during pregnancy. Levels can jump by 100 to 300 percent. For some women this spike is too big. It pushes the body past its safe limit.

High levels do not always cause problems right away. But they are linked to serious conditions. Preeclampsia and high blood pressure are common risks. Acute pancreatitis is another dangerous possibility. The baby can also suffer from low birth weight.

Doctors have few tools to fix this problem. Diet and exercise are the first line of defense. These methods work for mild cases. They often fail when levels are very high.

But here is the twist. New medicines exist that work very well. They target a specific protein called apolipoprotein C-III. These drugs can lower triglycerides by 40 to 70 percent. The problem is their safety record in pregnancy.

Think of your blood vessels like a busy highway. Triglycerides are the cars driving on it. Too many cars cause a traffic jam. This jam blocks the flow of oxygen and nutrients. New drugs act like a traffic cop. They remove cars from the road quickly.

The study looked at current evidence for managing this condition. Researchers reviewed many cases and guidelines. They found that early testing is key. Checking lipids in the first trimester helps catch risks early.

The most important finding is about specific drugs. Olezarsen is not recommended for pregnant women. However, two case reports show volanesorsen might be safe. These reports involved women with a rare genetic condition. They were monitored closely during treatment.

This does not mean these drugs are ready for everyone yet.

Experts say we need more data before approval. We need to know if these drugs harm the fetus. We also need to know about long-term effects. Until then doctors must rely on lifestyle changes.

What does this mean for you? Talk to your doctor about your lipid levels. Ask if you are at high risk. Do not start new medications without a plan. Your care team should include a specialist.

Limitations of this research are clear. The evidence for new drugs is thin. Most data comes from animal studies or small case reports. Large trials are needed to prove safety. This process takes time and money.

The road ahead involves more research. Scientists are testing these drugs in other populations first. Once safety is proven in adults, trials may begin for pregnant women. This path ensures both mother and baby stay safe.

Navigating hypertriglyceridemia in pregnancy requires careful planning. Early detection saves lives and prevents complications. Personalized strategies work best for each patient.

The field is moving forward slowly but surely. New options will likely appear in the near future. Until then, close monitoring remains the gold standard. Stay informed and ask questions during your visits.

7. ENDING

More trials are needed to confirm safety for expectant mothers. Researchers are working on this important goal. Approval will depend on clear safety data. Until then, diet and exercise remain the main tools. Talk to your doctor about your specific risks.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedMay 2026
View Original Abstract ↓
Pregnancy induces profound metabolic adaptations, including marked rises in lipid concentrations. Triglyceride levels may increase by 100–300% compared with pre-pregnancy values, and in some women this physiological response exceeds the adaptive range. Although triglyceride elevation alone does not necessarily increase the risk of complications, higher triglyceride levels have been linked to maternal disorders such as preeclampsia, gestational hypertension, and acute pancreatitis, as well as adverse fetal outcomes, including abnormal birth weight and preterm delivery. Management of hypertriglyceridemia in pregnancy is challenging due to limited pharmacologic options and the need to ensure fetal safety. A personalized, multidisciplinary strategy—based on a low-fat diet, weight optimization, and regular physical activity—remains first-line therapy. In severe hypertriglyceridemia with imminent pancreatitis risk, rapid interventions such as pharmacotherapy or therapeutic plasma exchange are required to promptly reduce triglyceride levels. Novel agents targeting apolipoprotein C-III (olezarsen, volanesorsen) can lower triglycerides by 40–70%, but their safety in pregnancy is not established. While olezarsen is not recommended, two case reports describe successful and safe use of volanesorsen in pregnant women with familial chylomicronemia syndrome under close monitoring. This narrative review synthesizes current evidence on the pathophysiology, prognostic implications, and management of hypertriglyceridemia in pregnancy, emphasizing early risk identification, first-trimester lipid assessment, and individualized treatment aligned with the updated ESC/EAS guidelines.
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