Lasme knew how to speak French and his native language of Myene in his childhood, but learned some English through high school classes.

His favorite players as a child were Scottie Pippen and Michael Jordan, whom he used to watch on television by sneaking out of bed at night.

He attended high school at Léon M'ba in his native Gabon[2] and was called up by Arimbi Nkolo, head coach of his country's national team.

While at Léon M'ba, whose basketball team competed in the African High School Federation, he played under Ebolo Firmin.

Lapeby tried to recruit Lasme to play for the school's team, and succeeded, but it did not offer athletic scholarships as an NCAA Division III college.

[5] The game was attended by Massachusetts Minutemen basketball coach Steve Lappas, who was searching for potential recruits.

He signed an institutional financial aid agreement to compete with Massachusetts for the 2003–04 season and was eligible to participate in the winter.

[8] In his official collegiate debut, a win over St. Francis (NY), Lasme contributed 6 points and 6 rebounds off the bench.

[9] He grabbed 13 rebounds in a quarterfinals game of the Preseason National Invitational Tournament vs Texas Tech, the first time he recorded double-digits in any major statistical category at the collegiate level.

[9] He was named the winner of Massachusetts' Jack Leaman Defensive Award at the end of the season, ranking second in the Atlantic 10 Conference in blocked shots.

He started 27 of the team's 28 games (Senior Day being the exception), scored in double figures 15 times, and finished the year with a 10.5 average.

By the end of the season, Lasme blocked a total of 108 shots, an average of 3.9 per game, good for third-highest in the nation.

In June 2007, Lasme was selected in the second round, 46th overall, in the 2007 NBA draft by the Golden State Warriors, using the pick they got from the New Jersey Nets in exchange for Clifford Robinson.

[3][15] He made his NBA debut on November 8, playing only 3.8 seconds of game time in the Warriors 120–115 loss to the Dallas Mavericks.

[24] Lasme finished the season well, averaging 10.6 points, 6.6 rebounds, and 1.5 blocks per game, 25.5 minutes a contest, after Partizan's strong showing that ended in the quarterfinals with a loss to CSKA Moscow.

In July 2009, Lasme signed with the Israeli League club Maccabi Tel Aviv, along with Alan Anderson.

[25] On June 8, 2010, Maccabi announced that they had released Lasme, after a foot injury had limited his playing time towards the end of the season.

Lasme then signed a two-year contract with the Russian League club Spartak Saint Petersburg in July 2010.

[31] However, Lasme fractured his foot just 2 minutes into the team's preseason opener against the Springfield Armor, and immediately underwent surgery.

[48] In September 2022, Lasme returned from his retirement after four years when he joined the Gabonese club Espoir to play for them in the 2023 BAL qualification tournament.