Select a category
![](https://domf5oio6qrcr.cloudfront.net/medialibrary/14691/e757d421-3c46-42fe-a230-8054f665823e.jpg)
When we think about radiation therapy, we typically picture treatments directed at tumors by a machine located outside the body. Now imagine a different scenario — one in which radioactive particles injected into the bloodstream find and destroy individual cancer cells, while leaving healthy cells unscathed.
The drug
One such "radioligand" is already available for certain patients with prostate cancer. Called Lu-PSMA-617 (trade name Pluvicto), it carries a lethal payload of radioactive atoms. The drug binds with a cell protein known as prostate-specific membrane antigen (PSMA), which is abundant on most prostate cancer cells but absent on most normal cells. After sticking to that protein, Lu-PSMA-617 delivers its radioactive cargo, and then the targeted cell dies.
As it currently stands, Lu-PSMA-617 is approved only for very a specific circumstance: eligible patients must have been treated already with chemotherapy for metastatic castration-resistant prostate cancer (mCRPC). During this advanced stage of the disease, prostate-specific antigen (PSA) levels rise despite treatments that block testosterone, a hormone that fuels prostate cancer growth (rising PSA indicates the cancer is progressing).
Doctors will often respond by switching to second-line hormonal treatments that block testosterone in other ways. If those drugs don't work or become ineffective, then chemotherapy is typically the next option.
But could men with mCRPC bypass chemotherapy — along with its challenging side effects — and start on Lu-PSMA-617 right away? Investigators evaluated that potential strategy during a newly-completed clinical trial.
The study
The PSMAfore phase 3 trial enrolled 468 men with mCRPC. All the men had PSMA-positive tumors, and each of them had been treated already with a second-line testosterone blocker. For most men, that drug was abiraterone; the rest had been treated with a drug called enzalutamide. None of the men had yet been given chemotherapy.
The investigators randomized all the enrolled men into two groups. Men in the treatment group were given infusions of Lu-PSMA-617, while men in the control group were switched to a second testosterone-blocker that they hadn't yet received.
The findings
After nearly a year and a half of follow-up, Lu-PSMA-617 treatment generated promising results. Crucially, the treated men avoided further cancer progression for a year on average, which was six months longer than progression was avoided in the control group.
Lu-PSMA-617 also produced significant drops in PSA: in 58% of the Lu-PSMA-617-treated men, PSA levels declined by half or more. Just 20% of men in the control group experienced comparable PSA declines. Lu-PSMA-617 was also well tolerated. The most common side effects were dry mouth and minor gastrointestinal symptoms, and treated men also reported less pain and better quality of life.
Commentary
Researchers still need to show that using Lu-PSMA-617 before chemotherapy actually lengthens survival before the FDA will approve this new indication. The enrolled subjects are still being followed, and "hopefully with further follow up, this sequence of treatments may become more widely available," says Dr. Marc B. Garnick, the Gorman Brothers Professor of Medicine at Harvard Medical School and Beth Israel Deaconess Medical Center.
Added Dr. Garnick, "This study marks another advance in our emerging treatment options for men with advanced prostate cancer, and underscores the methodical progression of pharmaceutical development. When new therapies are introduced, they are studied in patients in whom the treatment options are limited. Fortunately, Lu-PSMA-617 showed excellent results in this population, and the study outlined here suggests that it may be able to move this therapy to even earlier forms of advanced prostate cancer. We anxiously await longer-term follow-up of this important research."
Source: Harvard Health Publishing
![](https://www.investopedia.com/thmb/OP16opx17BZYSFTXfDoOt8FxVgA=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-2165384302-dbd08555052241738b855114061355ca.jpg)
Retail investors and hedge funds were net buyers of equities last week as major U.S. indexes fell, according to new research.
Stocks dropped last week, with the benchmark S&P 500 turning in its worst weekly performance in more than a year. Tech stocks, including several high-profile chip shares, were hit particularly hard.
Still, investors largely bought the dip, according to a report released Tuesday by Bank of America that analyzed the moves of its retail and hedge-fund clients. Clients bought individual stocks, pushing them to their highest inflows in nine weeks, and sold exchange-traded funds (ETFs) for a second week.
The buying was broad-based, with inflows for eight of the S&P 500's 11 sectors; real estate, industrials, and materials were the exceptions. Tech saw its largest inflows since June.
Stocks are off to a better start this week, with the major indexes rising Monday and making muted moves early Tuesday. Investors this week are largely tuned into the next CPI report, due tomorrow; tonight's presidential debate; and next week's Federal Reserve meeting, which could bring an interest-rate cut.
Do you have a news tip for Investopedia reporters? Please email us at [email protected]Read more on Investopedia
![](https://i0.wp.com/instablog9ja.com/wp-content/uploads/2024/09/IMG_4973.jpeg?fit=1038%2C543&ssl=1)
Actress Christabel Egbenya has celebrated the arrival of her second child.
With joy in my heart, I announce the birth of our amazing son. Chikamso Mark Jr Onumajuru God has definitely done it for my family for the second time. This journey wasn’t an easy one but I’m grateful to God for making me now a mother of two lovely kids. Big thanks to our God almighty for this wonderful blessing.
![](https://www.investopedia.com/thmb/5R0RzIs5blpZHmvX-314vBYnbNs=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-2171130090-e207190db92d4cfd9a589e66a0956511.jpg)
SpaceX successfully completed its Polaris Dawn launch just after 5 a.m. ET Tuesday morning, with four astronauts headed to the highest orbit above Earth in decades.
After initially targeting a launch around 3 a.m., Elon Musk's space exploration company said unfavorable weather led it to push the time back, eventually lifting off at 5:23 a.m. ET.
Dozens of experiments for data about human health in space and tests of Starlink equipment are set to be completed by the four astronauts during their orbit, which SpaceX says will last up to five days. They also are aiming to complete the world's first spacewalk by commercial astronauts.
SpaceX says the spacewalk currently is targeted for Thursday just before 2:30 a.m. ET, with another opportunity available Friday at the same time. The company said a livestream of the launch will be viewable on X and its website about an hour before the spacewalk begins.
Space Capital wrote in a recent edition of its Space Investment Quarterly that investments in space exploration in the first half of 2024 totaled more than the entirety of investment in the industry in 2023. More deals in the industry were done in the second quarter than in any of the previous nine, it said.
Do you have a news tip for Investopedia reporters? Please email us at [email protected]Read more on Investopedia
![](https://www.investopedia.com/thmb/KaBmi3D1wXFWr_3HtYAVUqFKYlw=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-21661309181-537356b533de4fab8459d8dc2522a2a5.jpg)
The Court of Justice of the European Union (EU) on Tuesday ruled against Alphabet's (GOOGL) Google, which had appealed a 2.4-billion-euro ($2.7 billion) fine for abusing its dominant position by favoring its own shopping services over those of its competitors.
Europe's top court upheld a 2017 decision by the European Commission, the EU's executive arm.
The Court of Justice also ruled against fellow tech giant Apple (AAPL) on Tuesday, saying it must pay a 13-billion-euro ($14.4 billion) tax bill after overturning a lower court ruling on Irish tax breaks.
"We are disappointed with the decision of the Court. This judgment relates to a very specific set of facts," a Google spokesperson told . "We made changes back in 2017 to comply with the European Commission's decision. Our approach has worked successfully for more than seven years, generating billions of clicks for more than 800 comparison shopping services."
Last week, the U.K.'s Competition and Markets Authority (CMA) said Google may have broken competition laws by abusing its influence and using "anti-competitive" practices in prioritizing its own ad exchange. Meanwhile, early last month a U.S. federal judge ruled that Google held an illegal monopoly on search.
Alphabet shares rose more than 1% soon after the opening bell Tuesday and are about 8% higher year-to-date.
Do you have a news tip for Investopedia reporters? Please email us at [email protected]Read more on Investopedia
![](https://i0.wp.com/instablog9ja.com/wp-content/uploads/2024/09/IMG_4967.jpeg?fit=1038%2C543&ssl=1)
OAP Toolz has prayed for a visa applicant after seeing him on his knees, praying over his documents at the UK visa application centre in Victoria Island, Lagos.
She said she drove past the UK visa centre in Victoria Island and saw this guy on his knees in front of his car praying over his documents. She prayed for God’s favour for him.
![Loading...](Images/perfect.gif)