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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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Syria Gives Kurds Four Days to Accept Integration as US Signals End of Support
Syrian Democratic Forces (SDF) fighters walk near an armored vehicle, following clashes between SDF and Syrian government forces, in Hasakah, Syria, Jan. 20, 2026. Photo: REUTERS/Orhan Qereman
Syria on Tuesday announced a ceasefire with Kurdish forces it has seized swathes of territory from in the northeast and gave them four days to agree on integrating into the central state, which their main ally, the United States, urged them to accept.
The lightning government advances in recent days and the apparent withdrawal of US support for the continued holding of territory by the Syrian Democratic Forces represent the biggest change of control in the country since rebels ousted Bashar al-Assad 13 months ago.
US envoy Tom Barrack in a social media post described the offer of integration into the central Syrian state with citizenship rights, cultural protections, and political participation as the “greatest opportunity” the Kurds have.
He added that the original purpose of the SDF, which Washington had supported as its main local ally battling Islamic State, had largely expired, and that the US had no long-term interest in retaining its presence in Syria.
The United States is monitoring with “grave concern” developments in Syria, a White House official said, and urged all relevant parties to continue negotiating in “good faith.”
“We urge all parties to exercise maximum restraint, avoid actions that could further escalate tensions, and prioritize the protection of civilians across all minority groups,” the White House official said.
FOUR-DAY CEASEFIRE
The SDF said it accepted a ceasefire agreement with the Damascus government and that it would not engage in any military action unless attacked.
A Syrian government statement said it had reached an understanding with the SDF for it to devise an integration plan for Hasakah province or risk state forces entering two SDF-controlled cities.
The government announced a four-day ceasefire starting on Tuesday evening and said it had asked the SDF to submit the name of a candidate to take the role of assistant to the defense minister in Damascus as part of the integration.
Northeast Syria, wedged between Turkey and Iraq, is home to both Kurds and Arabs and was largely overrun by Islamic State fighters a decade ago before the SDF drove them back with air support from a US-led coalition.
However, advances by the SDF’s main component, the Kurdish YPG force, were concerning to US ally Turkey, which regarded it as an offshoot of the PKK group that had waged a years-long insurgency inside Turkey.
Since Assad was overthrown in December 2024, Syria has been led by former rebel leader Ahmed al-Sharaa, who at one stage controlled the al Qaeda offshoot in the country, and who has emerged as a close ally of Turkey.
Northeast Syria remains sensitive to Ankara, and is of wider international concern because of the presence of SDF-guarded facilities holding thousands of detained Islamic State militants and civilians associated with them.
ISLAMIC STATE DETAINEES
About 200 low-level Islamic State fighters escaped Shaddadi prison in northeast Syria on Monday when the SDF departed, but Syrian government forces recaptured many of them, a US official said on Tuesday.
The Syrian Interior Ministry said on Tuesday that about 120 Islamic State detainees escaped, 81 of whom had been recaptured.
The SDF said it had also withdrawn from al-Hol camp housing thousands of civilians linked to the jihadist group near the Iraqi border.
A senior Syrian government defense official said Damascus had notified the US of the SDF intention to withdraw from the vicinity of al-Hol camp and that government forces were ready to deploy there.
The SDF has previously said it was guarding some 10,000 IS fighters.
Syrian military sources said government troops had advanced on Tuesday in eastern areas of Hasakah province and south of the town of Kobani on the border with Turkey.
The SDF remains in control of Hasakah City, the provincial capital, which is ethnically mixed between Kurds and Arabs, and the Kurdish-majority city of Qamishli.
The government statement said it would not try to enter Hasakah or Qamishli cities during the four days it had given the SDF to outline a plan for integrating into the Syrian state.
MONTHS OF DEADLOCK
Tensions between the SDF and Damascus spilled into conflict this month after deadlock over the fate of the group’s fighters and territory as it resisted government demands to dissolve into the defense ministry.
On Sunday the SDF agreed to withdraw from the Arab-majority provinces of Raqqa and Deir al-Zor, and on Monday government forces pushed into Hasakah province.
Reports indicated that SDF commander Mazloum Abdi and Sharaa held a rocky meeting on Monday, after Abdi’s signature appeared on a 14-point agreement with the government.
The United States, which has established close ties with Sharaa under President Donald Trump, has been closely involved in mediation between the sides.
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Iranian Lawmakers Threaten ‘Jihad’ if Supreme Leader Attacked
Iran’s Supreme Leader Ayatollah Ali Khamenei speaks during a meeting in Tehran, Iran, Jan. 17, 2026. Photo: Office of the Iranian Supreme Leader/WANA (West Asia News Agency)/Handout via REUTERS
Iranian lawmakers on Tuesday warned that any attack on Iran’s so-called “supreme leader,” Ayatollah Ali Khamenei, would lead to a declaration of “jihad,” or holy war, and a violent global response from the Islamic world.
The threat came as tensions between Washington and Tehran continued to escalate amid Iran’s deadly crackdown on nationwide anti-government protests. US President Donald Trump has repeatedly threatened to “hit” the Iranian regime and “help” the demonstrators if the violent repression continues.
“Any attack on the supreme leader means declaring war on the entire Islamic world,” Iran’s semi-official ISNA news agency quoted the parliamentary National Security Committee as saying. The commission reportedly added that those responsible for the attack should expect “the issuance of a jihad decree by Islamic scholars and the response of Islam’s soldiers in all parts of the world.”
Iranian President Masoud Pezeshkian issued a similar warning on Sunday, saying an attack on Khamenei would be viewed as a declaration of war.
“Any aggression against the supreme leader of our country is tantamount to all-out war against the Iranian nation,” he posted on social media.
Such threats from Iranian leaders have come amid speculation that the US may take coercive measures against Iran, including potential military strikes, following Trump’s own warnings to the regime.
Last week, for example, Trump called on Iranian protesters to “take over your institutions” and suggested the US was prepared to take strong action against the regime.
“Iranian Patriots, KEEP PROTESTING – TAKE OVER YOUR INSTITUTIONS!!!” he posted on social media. “Save the names of the killers and abusers. They will pay a big price. I have canceled all meetings with Iranian Officials until the senseless killing of protesters STOPS. HELP IS ON ITS WAY. MIGA [Make Iran Great Again]!!!”
Protests erupted in Iran on Dec. 28 over economic hardships but quickly swelled into nationwide demonstrations calling for the downfall of the country’s Islamist, authoritarian system.
The Iranian government has responded with force in an effort to crush the unrest.
The US-based group Human Rights Activists in Iran has confirmed 4,029 deaths during the protests, while the number of fatalities under review stands at 9,049. Additionally, at least 5,811 people have been injured, and the total number of arrests stands at 26,015.
Iranian officials have put the death toll at 5,000 while some reports indicate the figure could be much higher. The Sunday Times, for example, obtained a new report from doctors on the ground, which states that at least 16,500 protesters have died and 330,000 have been injured.
The exact numbers are difficult to verify, as the regime has imposed an internet blackout across the country while imposing its crackdown.
Trump recently called for an end to Khamenei’s 37-year reign.
“It’s time to look for new leadership in Iran,” Trump told Politico in an interview published on Saturday.
“The man is a sick man who should run his country properly and stop killing people,” Trump said. “His country is the worst place to live anywhere in the world because of poor leadership.”
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Greece, Israel to Cooperate on Anti-Drone Systems, Cybersecurity, Greek Minister Says
Israel’s Defense Minister Israel Katz shakes hands with his Greek counterpart Nikos Dendias at the Ministry of Defense in Athens Greece, Jan. 20, 2026. Photo: REUTERS/Louisa Gouliamaki
Greece will cooperate with Israel on anti-drone systems and cybersecurity, Greek Defense Minister Nikos Dendias said on Tuesday after meeting his Israeli counterpart in Athens.
“We agreed to exchange views and know-how to be able to deal with drones and in particular swarms of unmanned vehicles and groups of unmanned subsea vehicles,” Dendias said in joint statements with Israeli Defense Minister Israel Katz.
“We will also work together in order to be ready to intercept cyber threats.”
With strong economic and diplomatic ties, Greece and Israel operate an air training center on Greek territory and have held joint military drills in recent years.
Greece last year approved the purchase of 36 Israeli-made PULS rocket artillery systems for about 650 million euros ($762.52 million). It has also been in talks with Israel to develop an anti-aircraft and anti-ballistic multi-layer air and drone defense system, estimated to cost about 3 billion euros.
“We are equally determined regarding another critical issue: not to allow actors who seek to undermine regional stability to gain a foothold through terror, aggression or military proxies in Syria, in Gaza, in the Aegean Sea,” Katz said.
Dendias and Katz did not say who would pose drone, cyber or other threats to their countries. But Greece and Israel both see Turkey as a significant regional security concern.