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A German town built a granary atop its Jewish cemetery. Now the bones are yielding insights about Ashkenazi DNA.
BERLIN (JTA) – The city of Erfurt in central Germany is home to an impeccably restored medieval synagogue made possible because local Jews had been expelled long before the Nazis began their campaign to destroy Jewish sites.
Now, Erfurt’s long-hidden Jewish past is again offering new insights — this time about the genetic history of Ashkenazi Jews.
Human remains from a medieval Jewish cemetery in Erfurt have allowed what researchers say is the largest ancient Jewish DNA study to date. Conducted without disinterring any remains, in keeping with Jewish law, the study published Wednesday in the scientific journal Cell found that Erfurt’s medieval Jewish community was more genetically diverse than their modern-day cousins, and carried many of the same Jewish genetic diseases — such as Tay Sachs and cystic fibrosis — that affect Ashkenazi Jews today.
“There have been many previous DNA studies, but not of Jews,” said geneticist Shai Carmi, a professor at the Hebrew University of Jerusalem, whose search for study material led him to an archaeological dig at the Jewish cemetery in Erfurt. He and his collaborators were able to analyze DNA of 33 individuals who died between 1270 and 1400, using teeth they found there.
The study follows a similar analysis revealed in August by researchers in England, who studied the DNA from skeletons found at the bottom of a medieval well and concluded that the remains were likely of victims of an antisemitic massacre in 1190. Analysis of six individuals prior to their identification as Jewish revealed that Ashkenazi Jews developed a unique genetic variation centuries earlier than realized.
The Erfurt analysis also includes samples from before the epidemic of Black Death that was until recently understood to have created the genetic “bottleneck” that created the genetic markers common among Ashkenazi Jews today.
Erfurt’s Jewish settlement existed from the 11th to 15th century, with a brief gap following a 1349 massacre perpetrated after the Jews were falsely blamed for causing the bubonic plague. Surviving Jews returned there, but after all Jews were expelled once and for all in 1454, the city built a granary on top of the Jewish cemetery.
Karin Sczech participates in the excavation at the medieval Jewish cemetery of Erfurt. (Courtesy of TLDA Ronny Krause)
In 2013, the city approved the repurposing of the unused granary into a parking lot. Because it was an historic site, a rescue excavation was initiated, overseen for the State of Thuringia by German archaeologist Karin Sczech.
Meanwhile, Carmi had been looking for Jewish cemeteries anywhere in the world “where we could analyze remains already excavated,” he told JTA in a telephone interview from Jerusalem. “I consulted historians and eventually reached the archeologist in Erfurt.” Fortunately, he said, “they still hadn’t reburied the remains.”
He approached Sczech, who later became a co-author of the new study. In 2018, with a supportive judgment from Rabbi Ze’ev Litke — an Israeli expert on genetics and Jewish law — and permission from Erfurt’s then-rabbi, Benjamin Kochan, work began to extract and analyze DNA from detached teeth found in the graves. (About 500 Jews live in Erfurt today, most of them having migrated from the former Soviet Union since 1990.)
American geneticist David Reich picked up the teeth and brought them back to the department of human evolutionary biology at Harvard University in Cambridge, Massachusetts, where drilling and DNA extraction took place.
While the skeletons were reburied, the teeth are still stored at the research institutes where they have been analyzed, in case scientists need to retest to verify the result.
The project provides an ethical basis for studies of ancient Jewish DNA, Carmi said. “Of course we couldn’t just go to a cemetery and dig and take out skeletons; this would be prohibited,” he said, referring to Jewish law prohibiting the removal of bones from where someone was buried.
But Litke opined that the study could be done, because the bones already had been disturbed for an unrelated reason. “He recommended using teeth, as the analysis does almost no damage,” Carmi said.
There are many motivations to study Jewish DNA: One can find lost relatives going back a few generations, and answer questions about Jewish origin of partners intending to marry. But the goal of Carmi’s team was “to fill the gaps in our understanding of Ashkenazi Jewish early history.”
There are several non-destructive ways to obtain DNA from human remains, said Carmi, who also works as a consultant to an Israeli firm that helps clients trace their genetic roots.
“You can take an almost microscopic slice of bone and extract DNA in a solution, or put the entire bone in a solution and extract the DNA without drilling, without disturbing the dead. This opens the way to doing studies even without teeth,” he added.
His team found that the Erfurt community appeared to fit into two genetically distinct groups, descending either from Middle Eastern or European populations. This genetic variability no longer exists, Carmi said.
At the same time, Carmi said, the analysis found remarkable continuity in the local community, as well. “One third of the Erfurt individuals descended from one woman through their maternal lines,” he said, adding that evidence suggested that she lived between 1,000 and 2,000 years ago.
In a press statement, geneticist Reich of Harvard said the work “also provides a template for how a co-analysis of modern and ancient DNA data can shed light on the past. Studies like this hold great promise not only for understanding Jewish history, but also that of any population.”
The research team, with more than 30 scientists, included Hebrew University’s Shamam Waldman, a doctoral student in Carmi’s group, who performed most of the data analysis.
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UCLA student government condemns campus Hillel for hosting former hostage
A campus event featuring freed Israeli hostage Omer Shem Tov drew the condemnation of UCLA’s student government on Tuesday. In an open letter, the UCLA Students Associated Council said that bringing Tov to speak to students “served to legitimize and normalize” atrocities in Gaza and Lebanon.
Shem Tov, 23, was kidnapped from the Nova music festival in Southern Israel on Oct. 7, 2023, and held hostage in Gaza until his release in a prisoner exchange in February 2025. UCLA hosted him on April 14 for a Yom HaShoah event.
“While we affirm the humanity of all people impacted by violence, we reject the selective platforming of narratives that obscure the broader reality of ongoing state violence,” the student government letter wrote in the letter, which was addressed to the UCLA administration and UCLA Hillel among others. “Israel is currently continuing to carry out what has been widely identified by human rights advocates as a genocide in Gaza, while also expanding its illegal military campaign into Lebanon.
“In this context, elevating a single narrative, absent of critical political and humanitarian framing, serves to legitimize and normalize these ongoing atrocities.”
Rabbi Chaim Seidler-Feller, UCLA Hillel’s director emeritus, called the statement “completely ridiculous.”
“You can’t present the narrative of your experience without it being called ‘one sided,’” Seidler-Feller said. “There has to be a counter-story to persecution. Is there a counter-story to killing people?”
UCLA Hillel executive director Daniel Gold dismissed the criticism in Tuesday’s letter as antisemitic.
“Hillel at UCLA and Students Supporting Israel UCLA would like to apologize…for absolutely nothing,” he wrote in a statement. “Members of UCLA student government have once again shown they are anti-dialogue, anti-learning, anti-truth, anti-student and antisemitic.”
The USAC did not respond to a request for comment.
As college campuses across the country became a hotspot for pro-Palestinian activism following the Oct. 7 attack, UCLA, with an activist history and a large Jewish population, stood out as a major flashpoint. Its student encampment was the site of a riot in April 2024 and eventually cleared by police in riot gear.
The USAC has sided with pro-Palestinian protesters throughout. In a Feb. 2025 letter titled “We Are All SJP,” the USAC, which is democratically elected by the roughly 30,000-member UCLA student body, condemned Chancellor Julio Frenk’s suspension of Students for Justice in Palestine. The letter referred to Israel only as “the Zionist state” or put the country’s name inside quotation marks.
The University of California has since been sued by the Department of Justice, which said that UCLA created a hostile work environment against Jewish and Israeli faculty in violation of Title VII of the Civil Rights Act.
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Trump extends ceasefire with Iran, even after Iran balks at new round of negotiations
(JTA) — President Donald Trump announced on Tuesday that he would unilaterally extend the U.S.-Israeli ceasefire with Iran, even though Iran had not agreed to his conditions or even to return to the negotiating table.
Trump announced the decision on Truth Social just hours before the two-week-old deal was set to expire. Citing Iran’s “fractured” leadership, Trump wrote that he had been asked by Pakistani Prime Minister Shehbaz Sharif to “hold our Attack on the Country of Iran until such time as their leaders and representatives can come up with a unified proposal.”
Vice President JD Vance’s planned trip to Islamabad, where talks were set to take place, was postponed indefinitely after Iran failed to confirm its participation in negotiations.
Trump added that the United States would maintain its naval blockade of Iranian ports in the Strait of Hormuz, despite Iran’s repeated calls for the restrictions to be lifted.
The announcement marked a sharp departure from the president’s statements earlier in the day, telling CNBC that, if a deal was not made before the deadline, “I expect to be bombing.”
In a statement Tuesday, Sharif thanked Trump for his “gracious acceptance” of Pakistan’s request to extend the ceasefire, adding that the country would “continue its earnest efforts for a negotiated settlement of the conflict.”
The announcement adds to uncertain about the war’s future, including for Israelis who lived through six weeks of Iranian bombing, and renews questions about Trump’s commitment to achieving his war goals, which have varied and included blunting Iran’s nuclear ambitions, achieving regime change, and destroying Iran’s stockpile of ballistic missiles. He said earlier this week that he was asking Iran to limit its nuclear program for 20 years, five years longer than was required by the deal struck by Barack Obama in 2015. Trump exited that deal in 2018.
Last week, Trump announced a different ceasefire, between Israel and Lebanon, on Truth Social, contradicting Israel’s claim that the Iran ceasefire would not apply to its fighting with Hezbollah, an Iran-backed proxy in Lebanon.
Trump’s announcement of the ceasefire extension came during the night in Israel, after Israelis began their celebration of Independence Day. It drew criticism from one of his staunchest pro-Israel supporters, the Zionist Organization of America, whose national president Morton Klein said in a statement that “interminable delay is the standard Islamic Iranian regime negotiating tactic” and that acceding to it represented a victory for Iran. The statement did not mention Trump.
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Alan Dershowitz quits Democratic Party, calling it ‘most anti-Israel party in U.S. history’
(JTA) — Alan Dershowitz, the prominent pro-Israel attorney whose clients have included Donald Trump and Jeffrey Epstein, announced on Monday that he was leaving the Democratic party and registering as a Republican.
Describing himself as a “lifelong Democrat,” Dershowitz wrote in a Wall Street Journal op-ed that he had decided to “bite the bullet and register as a Republican,” citing Democratic support for an arms embargo on Israel last week and the Michigan Senate candidate Abdul el-Sayed’s anti-Israel rhetoric.
“There is no denying that the hard left, anti-Israel wing of the Democratic Party has moved from the fringe to the mainstream,” Dershowitz wrote, adding that “Republicans have their own antisemitic fringe, but for now it remains a fringe.”
The announcement formalized a political evolution for Dershowitz, who defended Trump during his first impeachment and has increasingly broken with Democrats over Israel in recent years.
In 2021, Dershowitz nominated Jared Kushner, Trump’s son-in-law, and Avi Berkowitz, Trump’s top Middle Eastern envoy during his first administration, for the Nobel Peace Prize over their hand in shaping the Abraham Accords.
Dershowitz — who has recently faced scrutiny over his ties to Epstein, and previously denied allegations of sexual misconduct made by one of Epstein’s accusers — panned the Democratic Party as the “most anti-Israel party in U.S. history” in the op-ed.
“I believe that the Democratic Party’s hostility to Israel represents a deeper and more dangerous shift away from the center and toward a radical approach that is bad for America and the free world,” Dershowitz wrote, adding that he intended to “work hard to prevent the Democrats from gaining control of the House and Senate.”
Dershowitz’s comments are in line with Trump’s statements about Jews and the Democratic Party. He has repeatedly expressed amazement at how any Jews could vote for the Democrats considering his own record when it comes to Israel.
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