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			 Actelion, Europe's biggest biotech company, and ZS Pharma both 
			issued statements late on Thursday stating they had held preliminary 
			discussions, but did not specifically mention if the talks were 
			related to a buyout. 
			 
			ZS Pharma said the talks were "regarding a potential strategic 
			transaction" and Actelion said the talks were "without any 
			commitment on either party". 
			 
			Bloomberg had reported earlier that Actelion had offered to buy ZS 
			Pharma last month in a deal valued at $2.5 billion. 
			 
			Actelion said in April it was looking for acquisition opportunities 
			but would not pay an overly high price. 
			 
			Healthcare deal-making hit a record of $392.4 billion in 2014 and 
			has already surpassed that this year, reaching $447.5 billion as of 
			Sept. 10, according to Thomson Reuters data. 
			
			  
			Acquirers are taking advantage of low borrowing costs to tap into a 
			wave of promising new drugs from smaller companies, broadening their 
			product line-ups to help them compete better. 
			"We have a team of six people who are supporting acquisitions and 
			business development," Andrew Weiss, Actelion's head of investor 
			relations, said on Friday. 
			 
			Kepler Cheuvreux analyst Fabian Wenner said ZS Pharma's drug 
			portfolio could be a good fit in terms of therapeutic focus and a 
			deal at $2.5 billion would probably be neutral for Actelion's 
			earnings. 
			 
			ZS Pharma's shares closed up 28 percent on Actelion's reported 
			interest, valuing the company at $1.9 billion, while shares in 
			Actelion fell 3 percent on Friday morning, valuing it at around 
			$15.5 billion. 
			  
			  
			
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			Actelion has a dominant position in treatments for pulmonary 
			arterial hypertension (PAH), which weakens the heart, but is looking 
			at ways to expand its sources of revenue. Its original blockbuster 
			drug Tracleer is about to lose patent protection, although sales of 
			new product Opsumit are growing. 
			The Swiss group has itself often been the subject of takeover talk 
			and its shares leapt in June on speculation that Shire was 
			considering a $19 billion bid. 
			 
			San Mateo, California-based ZS Pharma's lead experimental drug, 
			ZS-9, is aimed at treating hyperalkemia, a build up of potassium in 
			the body that could lead to heart failure. 
			 
			Analysts at Jefferies said ZS-9 had some overlap with the cardiology 
			component of Actelion's PAH business, adding that an all-cash deal 
			might be possible. 
			 
			ZS Pharma filed a marketing application for ZS-9 with the U.S. Food 
			and Drug Administration in May. The FDA is expected to issue a 
			ruling on the application in May next year. 
			 
			(Additional reporting by Vidya L Nathan in Bengaluru and Ben 
			Hirschler in London; Editing by Savio D'Souza and Mark Potter) 
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